Finding the Fourth Proportional to 2,617,013.80, 3,608,259.78 and 2,131,791.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617,013.80 : 3,608,259.78 = 2,131,791.40 : x
2. Step 2: Convert to fraction form
   2,617,013.80/3,608,259.78 = 2,131,791.40/x
3. Step 3: Cross multiply
   2,617,013.80x = 3,608,259.78 × 2,131,791.40
4. Step 4: Simplify right side
   2,617,013.80x = 7,692,057,167,969.89
5. Step 5: Solve for x
   x = 7,692,057,167,969.89/2,617,013.80
6. Step 6: Final answer
   x = 2,939,249.75