A beam with length $4\mathrm{.}8$ m is subjected to the force system as shown in Figure $4\mathrm{.}1.$ Four forces with magnitudes $150$N$,250$N$,600$N and $100$ N are acting at points A$,$B$,$C and D$,$ respectively. Reduce the given system of forces to equivalent force$-$couple system at point C$.$

$[10]$

Figure $4\mathrm{.}1$