Finding the Fourth Proportional to 1,100.88, 1,520.24 and 708.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.88 : 1,520.24 = 708.59 : x
2. Step 2: Convert to fraction form
   1,100.88/1,520.24 = 708.59/x
3. Step 3: Cross multiply
   1,100.88x = 1,520.24 × 708.59
4. Step 4: Simplify right side
   1,100.88x = 1,077,215.72
5. Step 5: Solve for x
   x = 1,077,215.72/1,100.88
6. Step 6: Final answer
   x = 978.50