Finding the Fourth Proportional to 1,247,809.89, 1,721,978.82 and 674,850.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,809.89 : 1,721,978.82 = 674,850.05 : x
2. Step 2: Convert to fraction form
   1,247,809.89/1,721,978.82 = 674,850.05/x
3. Step 3: Cross multiply
   1,247,809.89x = 1,721,978.82 × 674,850.05
4. Step 4: Simplify right side
   1,247,809.89x = 1,162,077,492,775.94
5. Step 5: Solve for x
   x = 1,162,077,492,775.94/1,247,809.89
6. Step 6: Final answer
   x = 931,293.70