Finding the Fourth Proportional to 1,138,111.61, 1,571,326.25 and 730,389.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,111.61 : 1,571,326.25 = 730,389.20 : x
2. Step 2: Convert to fraction form
   1,138,111.61/1,571,326.25 = 730,389.20/x
3. Step 3: Cross multiply
   1,138,111.61x = 1,571,326.25 × 730,389.20
4. Step 4: Simplify right side
   1,138,111.61x = 1,147,679,711,167.92
5. Step 5: Solve for x
   x = 1,147,679,711,167.92/1,138,111.61
6. Step 6: Final answer
   x = 1,008,407.00