Finding the Fourth Proportional to 925,254.72, 1,387,883.52 and 260,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   925,254.72 : 1,387,883.52 = 260,406.72 : x
2. Step 2: Convert to fraction form
   925,254.72/1,387,883.52 = 260,406.72/x
3. Step 3: Cross multiply
   925,254.72x = 1,387,883.52 × 260,406.72
4. Step 4: Simplify right side
   925,254.72x = 361,414,195,185.25
5. Step 5: Solve for x
   x = 361,414,195,185.25/925,254.72
6. Step 6: Final answer
   x = 390,610.49