The value of x in the figure is 1148.4
How the value of x is calculated.
∠A + ∠B +∠C = 180 (sum of int. angles of ∆)
24 + 96 +∠A = 180
120 + ∠A = 180
∠A = 180 - 120
∠A = 60⁰
Using sine rule
The sine rule relates the sides and angles of a triangle: a/sin A =b/sin B= c/sin C
where
a,b,c are sides of the triangle
A,B,C are interior angles facing the corresponding sides.
sinA/1000 = sinC/x
xsinA = 1000sinC
x = 1000sinC/sinA
x = 100sin96/sin60
x = 1000* 0.9945/0.8660
x = 994.5/0.8660
x = 1148.4
Complete question