Finding the Fourth Proportional to 1,666,010.61, 2,499,938.04 and 813,089.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666,010.61 : 2,499,938.04 = 813,089.31 : x
2. Step 2: Convert to fraction form
   1,666,010.61/2,499,938.04 = 813,089.31/x
3. Step 3: Cross multiply
   1,666,010.61x = 2,499,938.04 × 813,089.31
4. Step 4: Simplify right side
   1,666,010.61x = 2,032,672,895,986.35
5. Step 5: Solve for x
   x = 2,032,672,895,986.35/1,666,010.61
6. Step 6: Final answer
   x = 1,220,084.00