Finding the Fourth Proportional to 2,487.17, 3,432.15 and 1,425.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.17 : 3,432.15 = 1,425.12 : x
2. Step 2: Convert to fraction form
   2,487.17/3,432.15 = 1,425.12/x
3. Step 3: Cross multiply
   2,487.17x = 3,432.15 × 1,425.12
4. Step 4: Simplify right side
   2,487.17x = 4,891,225.61
5. Step 5: Solve for x
   x = 4,891,225.61/2,487.17
6. Step 6: Final answer
   x = 1,966.59