Finding the Fourth Proportional to 2,540.52, 3,809.24 and 1,057.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.52 : 3,809.24 = 1,057.95 : x
2. Step 2: Convert to fraction form
   2,540.52/3,809.24 = 1,057.95/x
3. Step 3: Cross multiply
   2,540.52x = 3,809.24 × 1,057.95
4. Step 4: Simplify right side
   2,540.52x = 4,029,980.17
5. Step 5: Solve for x
   x = 4,029,980.17/2,540.52
6. Step 6: Final answer
   x = 1,586.28