Finding the Fourth Proportional to 2,657,453, 3,986,179.50 and 861,838.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657,453 : 3,986,179.50 = 861,838.52 : x
2. Step 2: Convert to fraction form
   2,657,453/3,986,179.50 = 861,838.52/x
3. Step 3: Cross multiply
   2,657,453x = 3,986,179.50 × 861,838.52
4. Step 4: Simplify right side
   2,657,453x = 3,435,443,040,734.34
5. Step 5: Solve for x
   x = 3,435,443,040,734.34/2,657,453
6. Step 6: Final answer
   x = 1,292,757.78