The resultant of the three forces is determined as 1,487 N.
Resolution of the forces into x and y components
Fx = Fcosθ
Fy = Fsinθ
F1x = 300 x cos(30) = 259.81
F1y = 300 x sin(30) = 150
F2x = 600 x cos(90) = 0
F2y = 600 x sin(90) = 600
Assuming the angle of F3 = 60⁰
F3x = 450 x cos(60) = 225
F3y = 450 x sin(60) = 389.7
F4x = 250 x cos(60) = 125
F4y = 250 x sin(60) = 216.5
∑X = 259.81 + 0 + 225 + 125 = 609.81 N
∑Y = 150 + 600 + 389.7 + 216.5 = 1,356.2 N
Resultant force
R = √(609.81² + 1,356.2²)
R = 1,487 N
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