To determine which screen x coordinate corresponds to a point at Ax,Az multiply the point coordinates by:
${\displaystyle {\text{screen abscissa}}(Bx)\ ={\text{model abscissa}}(Ax)\times {\frac {{\text{distance from eye to screen}}(Bz)}{{\text{distance from eye to point}}(Az)}}}$
the same works for the screen y coordinate:

${\displaystyle {\text{screen ordinate}}(By)\ ={\text{model ordinate}}(Ay)\times {\frac {{\text{distance from eye to screen}}(Bz)}{{\text{distance from eye to point}}(Az)}}}$