Finding the Fourth Proportional to 2,539.78, 3,504.94 and 1,545.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.78 : 3,504.94 = 1,545.10 : x
2. Step 2: Convert to fraction form
   2,539.78/3,504.94 = 1,545.10/x
3. Step 3: Cross multiply
   2,539.78x = 3,504.94 × 1,545.10
4. Step 4: Simplify right side
   2,539.78x = 5,415,470.17
5. Step 5: Solve for x
   x = 5,415,470.17/2,539.78
6. Step 6: Final answer
   x = 2,132.26