Finding the Fourth Proportional to 1,451.31, 2,002.50 and 862.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.31 : 2,002.50 = 862.04 : x
2. Step 2: Convert to fraction form
   1,451.31/2,002.50 = 862.04/x
3. Step 3: Cross multiply
   1,451.31x = 2,002.50 × 862.04
4. Step 4: Simplify right side
   1,451.31x = 1,726,225.09
5. Step 5: Solve for x
   x = 1,726,225.09/1,451.31
6. Step 6: Final answer
   x = 1,189.43