Finding the Fourth Proportional to 2,057,404.80, 3,086,107.20 and 1,917,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057,404.80 : 3,086,107.20 = 1,917,436.80 : x
2. Step 2: Convert to fraction form
   2,057,404.80/3,086,107.20 = 1,917,436.80/x
3. Step 3: Cross multiply
   2,057,404.80x = 3,086,107.20 × 1,917,436.80
4. Step 4: Simplify right side
   2,057,404.80x = 5,917,415,514,024.96
5. Step 5: Solve for x
   x = 5,917,415,514,024.96/2,057,404.80
6. Step 6: Final answer
   x = 2,876,155.20