Finding the Fourth Proportional to 2,153,938.57, 2,972,435.25 and 1,187,068.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153,938.57 : 2,972,435.25 = 1,187,068.90 : x
2. Step 2: Convert to fraction form
   2,153,938.57/2,972,435.25 = 1,187,068.90/x
3. Step 3: Cross multiply
   2,153,938.57x = 2,972,435.25 × 1,187,068.90
4. Step 4: Simplify right side
   2,153,938.57x = 3,528,485,442,538.72
5. Step 5: Solve for x
   x = 3,528,485,442,538.72/2,153,938.57
6. Step 6: Final answer
   x = 1,638,155.09