Calculate Magnitude of F for 203 kJ Work on Car Moving up 7.34° Hill

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To calculate the magnitude of force F needed for a 1420-kg car moving up a 7.34° hill to achieve 203 kJ of net work, the work done by friction and gravity must be considered. The frictional force is 545 N, and the height of the hill is determined to be approximately 30.66 m. The work done by the frictional force is calculated as 16709.7 J, while the work done by gravity is found to be 54509.41 J. The net work equation combines these values with the work done by F, leading to the equation F*h + 16709.7 + 54509.41 = 203000 J. The incorrect calculation of F may stem from miscalculating the work done by gravity or the total net work equation setup.
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A 1420-kg car is being driven up a 7.34° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 545 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: its weight W and the normal force FN directed perpendicular to the road surface. The length of the road up the hill is 240 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 203 kJ?

i found the height and then proceeded to find the work of F (keeping the variable in the equation) and then i found the work of the frictional force by multiplying the given force and the height. Then i broke down the weight into two components, x and y. since the work of the normal force and the y component of gravity are both 0 (considering the fact that cos90 = 0) i disregarded those. i then found the work of the y component of gravity by m*g*h... i added all 3 works to equal the net work given and then i solved for F but everytime i get the wrong answer
 
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Maybe you could show us your calculations for the work done by each of the forces?
 
For the work of F i multiplied F*h = F*30.66, for the work of the frictional force 545*30.66 = 16709.7, for the work of gravity m*g*sin7.34*30.66 = 54509.41, and then i added all those and set them equal to 203000 J (because its the net work)... and then i solved for F to get 4298.14... but that's the wrong answer... can you find what i did wrong? thanks!
 
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