Finding the Fourth Proportional to 1,539.24, 2,124.27 and 876.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,539.24 : 2,124.27 = 876.10 : x
2. Step 2: Convert to fraction form
   1,539.24/2,124.27 = 876.10/x
3. Step 3: Cross multiply
   1,539.24x = 2,124.27 × 876.10
4. Step 4: Simplify right side
   1,539.24x = 1,861,061.38
5. Step 5: Solve for x
   x = 1,861,061.38/1,539.24
6. Step 6: Final answer
   x = 1,209.07