Finding the Fourth Proportional to 1,101.28, 1,519.49 and 708.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.28 : 1,519.49 = 708.82 : x
2. Step 2: Convert to fraction form
   1,101.28/1,519.49 = 708.82/x
3. Step 3: Cross multiply
   1,101.28x = 1,519.49 × 708.82
4. Step 4: Simplify right side
   1,101.28x = 1,077,044.90
5. Step 5: Solve for x
   x = 1,077,044.90/1,101.28
6. Step 6: Final answer
   x = 977.99