Determine The Position X Y 0 For Fixing Cable Ba So

Determine the position (x, y, 0) for fixing cable BA so that the resultant of the forces exerted on the pole is directed along its axis, from B toward O, and has magnitude FR. Also, what is the magnitude of force F3?

F1 = 500 N
F2 = 400 N
FR = 1000 N
a = 1 m
b = 2 m
c = 2 m
d = 3 m

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