Three point charges, q$1=-3\mathrm{.}82$nC$,$ q$2=4\mathrm{.}80$nC and q$3=2\mathrm{.}75$nC are aligned along the x axis as shown in the figure below. Assume that L$1=0\mathrm{.}531$m and L$2=0\mathrm{.}772$m$.$