Finding the Fourth Proportional to 890,155.32, 1,335,443.04 and 291,114.15

Step by Step Solution

1. Step 1: Write the proportion equation
   890,155.32 : 1,335,443.04 = 291,114.15 : x
2. Step 2: Convert to fraction form
   890,155.32/1,335,443.04 = 291,114.15/x
3. Step 3: Cross multiply
   890,155.32x = 1,335,443.04 × 291,114.15
4. Step 4: Simplify right side
   890,155.32x = 388,766,365,463.02
5. Step 5: Solve for x
   x = 388,766,365,463.02/890,155.32
6. Step 6: Final answer
   x = 436,739.92