Finding the Fourth Proportional to 2,131,978.16, 2,942,137.55 and 1,165,108.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,978.16 : 2,942,137.55 = 1,165,108.91 : x
2. Step 2: Convert to fraction form
   2,131,978.16/2,942,137.55 = 1,165,108.91/x
3. Step 3: Cross multiply
   2,131,978.16x = 2,942,137.55 × 1,165,108.91
4. Step 4: Simplify right side
   2,131,978.16x = 3,427,910,662,152.66
5. Step 5: Solve for x
   x = 3,427,910,662,152.66/2,131,978.16
6. Step 6: Final answer
   x = 1,607,854.49