Finding the Fourth Proportional to 1,101.72, 1,519.25 and 787.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.72 : 1,519.25 = 787.04 : x
2. Step 2: Convert to fraction form
   1,101.72/1,519.25 = 787.04/x
3. Step 3: Cross multiply
   1,101.72x = 1,519.25 × 787.04
4. Step 4: Simplify right side
   1,101.72x = 1,195,710.52
5. Step 5: Solve for x
   x = 1,195,710.52/1,101.72
6. Step 6: Final answer
   x = 1,085.31