Finding the Fourth Proportional to 1,539.33, 2,124.27 and 876.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,539.33 : 2,124.27 = 876.18 : x
2. Step 2: Convert to fraction form
   1,539.33/2,124.27 = 876.18/x
3. Step 3: Cross multiply
   1,539.33x = 2,124.27 × 876.18
4. Step 4: Simplify right side
   1,539.33x = 1,861,227.89
5. Step 5: Solve for x
   x = 1,861,227.89/1,539.33
6. Step 6: Final answer
   x = 1,209.12