Finding the resultant force, moment, and x-y coordinates

[j19063dc]

Homework Statement

I am trying to find help with finding the x any y coords of the resultant force, I have found the resultant force and moment but i think i may have run into problems finding the x and y coordinates. I know tha m_x' = sum Mx' but im unsure of the equation

Relevant Equations

M_x' = sum Mx', My'=sumMy'

 

[haruspex]

You have missed out a step. You need to find the resultant force as a vector, not just its magnitude, before you can find the point where it acts.