Finding the Fourth Proportional to 1,227,757.78, 1,694,567.01 and 825,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227,757.78 : 1,694,567.01 = 825,116.50 : x
2. Step 2: Convert to fraction form
   1,227,757.78/1,694,567.01 = 825,116.50/x
3. Step 3: Cross multiply
   1,227,757.78x = 1,694,567.01 × 825,116.50
4. Step 4: Simplify right side
   1,227,757.78x = 1,398,215,200,306.67
5. Step 5: Solve for x
   x = 1,398,215,200,306.67/1,227,757.78
6. Step 6: Final answer
   x = 1,138,836.36