Finding the Fourth Proportional to 2,587.18, 3,569.17 and 1,539.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.18 : 3,569.17 = 1,539.02 : x
2. Step 2: Convert to fraction form
   2,587.18/3,569.17 = 1,539.02/x
3. Step 3: Cross multiply
   2,587.18x = 3,569.17 × 1,539.02
4. Step 4: Simplify right side
   2,587.18x = 5,493,024.01
5. Step 5: Solve for x
   x = 5,493,024.01/2,587.18
6. Step 6: Final answer
   x = 2,123.17