Finding the Fourth Proportional to 1,290.98, 1,781.55 and 701.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.98 : 1,781.55 = 701.52 : x
2. Step 2: Convert to fraction form
   1,290.98/1,781.55 = 701.52/x
3. Step 3: Cross multiply
   1,290.98x = 1,781.55 × 701.52
4. Step 4: Simplify right side
   1,290.98x = 1,249,785.80
5. Step 5: Solve for x
   x = 1,249,785.80/1,290.98
6. Step 6: Final answer
   x = 968.09