Finding the Fourth Proportional to 898,395.72, 1,347,787.34 and 258,695.16

Step by Step Solution

1. Step 1: Write the proportion equation
   898,395.72 : 1,347,787.34 = 258,695.16 : x
2. Step 2: Convert to fraction form
   898,395.72/1,347,787.34 = 258,695.16/x
3. Step 3: Cross multiply
   898,395.72x = 1,347,787.34 × 258,695.16
4. Step 4: Simplify right side
   898,395.72x = 348,666,061,567.27
5. Step 5: Solve for x
   x = 348,666,061,567.27/898,395.72
6. Step 6: Final answer
   x = 388,098.53