Finding the Fourth Proportional to 2,647,129.98, 3,971,137.86 and 2,078,488.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647,129.98 : 3,971,137.86 = 2,078,488.14 : x
2. Step 2: Convert to fraction form
   2,647,129.98/3,971,137.86 = 2,078,488.14/x
3. Step 3: Cross multiply
   2,647,129.98x = 3,971,137.86 × 2,078,488.14
4. Step 4: Simplify right side
   2,647,129.98x = 8,253,962,944,314.98
5. Step 5: Solve for x
   x = 8,253,962,944,314.98/2,647,129.98
6. Step 6: Final answer
   x = 3,118,079.96