Finding the Fourth Proportional to 890,061.36, 1,335,174.12 and 291,025.59

Step by Step Solution

1. Step 1: Write the proportion equation
   890,061.36 : 1,335,174.12 = 291,025.59 : x
2. Step 2: Convert to fraction form
   890,061.36/1,335,174.12 = 291,025.59/x
3. Step 3: Cross multiply
   890,061.36x = 1,335,174.12 × 291,025.59
4. Step 4: Simplify right side
   890,061.36x = 388,569,836,025.73
5. Step 5: Solve for x
   x = 388,569,836,025.73/890,061.36
6. Step 6: Final answer
   x = 436,565.22