Finding the Fourth Proportional to 1,401,279.31, 2,097,151.60 and 861,250.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401,279.31 : 2,097,151.60 = 861,250.85 : x
2. Step 2: Convert to fraction form
   1,401,279.31/2,097,151.60 = 861,250.85/x
3. Step 3: Cross multiply
   1,401,279.31x = 2,097,151.60 × 861,250.85
4. Step 4: Simplify right side
   1,401,279.31x = 1,806,173,598,078.86
5. Step 5: Solve for x
   x = 1,806,173,598,078.86/1,401,279.31
6. Step 6: Final answer
   x = 1,288,946.17