Finding the Fourth Proportional to 1,002.99, 1,385.46 and 807.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.99 : 1,385.46 = 807.24 : x
2. Step 2: Convert to fraction form
   1,002.99/1,385.46 = 807.24/x
3. Step 3: Cross multiply
   1,002.99x = 1,385.46 × 807.24
4. Step 4: Simplify right side
   1,002.99x = 1,118,398.73
5. Step 5: Solve for x
   x = 1,118,398.73/1,002.99
6. Step 6: Final answer
   x = 1,115.06