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delta Q/delta t = (k*A*deltaT)/d

delta Q = 333 J/g (Lf) *4100 g = 1365300 J

(4186 J/kg*deltaT)*4.1 kg*28 C = 480552.8 J

1365300 J + 480552.8 J = 1845852.8 J = delta Q

1845852.8/delta t = ((.030 W/m C)*(0.465 m^2)*(28 C))/.02 m

Where did I go wrong?! Thanks a lot