Finding the Fourth Proportional to 2,485.72, 3,726.15 and 1,025.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.72 : 3,726.15 = 1,025.92 : x
2. Step 2: Convert to fraction form
   2,485.72/3,726.15 = 1,025.92/x
3. Step 3: Cross multiply
   2,485.72x = 3,726.15 × 1,025.92
4. Step 4: Simplify right side
   2,485.72x = 3,822,731.81
5. Step 5: Solve for x
   x = 3,822,731.81/2,485.72
6. Step 6: Final answer
   x = 1,537.88