In the figure particle $1$ of charge $+4e$ is above a floor by distance $d_1=4\mathrm{.}00mm$ and particle $2$ of charge $+6e$ is on the floor, at distance $d_2$

$=8\mathrm{.}50mm$ horizontally from particle $1.$ What is the $x$ component of the electrostatic force on particle $2$ due to particle $1?$