Find the component in X$-$axis, $Rx(kN),$ of the resultant, $R,(kN)$ of the following force system:

F$2$

Where:

$F1=2\mathrm{.}2KN$

$F2=2\mathrm{.}5KN$

$F3=1\mathrm{.}1KN$

$F4=1\mathrm{.}9KN$

Note: Provide the answer with this format ##$.$## $(2$ decimal Places$)$