Finding the Fourth Proportional to 2,682,976.76, 4,024,589.72 and 861,416

Step by Step Solution

1. Step 1: Write the proportion equation
   2,682,976.76 : 4,024,589.72 = 861,416 : x
2. Step 2: Convert to fraction form
   2,682,976.76/4,024,589.72 = 861,416/x
3. Step 3: Cross multiply
   2,682,976.76x = 4,024,589.72 × 861,416
4. Step 4: Simplify right side
   2,682,976.76x = 3,466,845,978,243.52
5. Step 5: Solve for x
   x = 3,466,845,978,243.52/2,682,976.76
6. Step 6: Final answer
   x = 1,292,164.00