Answer
$x\gt\frac{1200}{33.33}=36.0036$
Since $x$ must be an integer:
$x\geq37~units$
Work Step by Step
This product will return a profit if:
$R\gt C$
$125.33x\gt92x+1200$
$125.33x-92x\gt1200$
$33.33x\gt1200$
$x\gt\frac{1200}{33.33}=36.0036$
Since $x$ must be an integer:
$x\geq37$