Finding the Fourth Proportional to 2,534.78, 3,498.26 and 1,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,534.78 : 3,498.26 = 1,540.15 : x
2. Step 2: Convert to fraction form
   2,534.78/3,498.26 = 1,540.15/x
3. Step 3: Cross multiply
   2,534.78x = 3,498.26 × 1,540.15
4. Step 4: Simplify right side
   2,534.78x = 5,387,828.69
5. Step 5: Solve for x
   x = 5,387,828.69/2,534.78
6. Step 6: Final answer
   x = 2,125.56