As shown, a truss is loaded with forces $P_1=192lb$ and $P_2=400lb$ and has the dimension $a=4\mathrm{.}00ft.$

Determine $A_x$ and $A_y,$ joint $A\text{'}$s reaction forces' magnitudes in the $x$ and $y$ directions, respectively, and $C_y,$ joint $C\text{'}$s reaction force's magnitude in the $y$ direction.

Express your answers numerically in pounds to three significant figures separated by commas.