Finding the Fourth Proportional to 1,451.52, 2,002.50 and 861.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.52 : 2,002.50 = 861.48 : x
2. Step 2: Convert to fraction form
   1,451.52/2,002.50 = 861.48/x
3. Step 3: Cross multiply
   1,451.52x = 2,002.50 × 861.48
4. Step 4: Simplify right side
   1,451.52x = 1,725,113.70
5. Step 5: Solve for x
   x = 1,725,113.70/1,451.52
6. Step 6: Final answer
   x = 1,188.49