Finding the Fourth Proportional to 2,156,605.97, 2,976,107.78 and 1,189,796.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,605.97 : 2,976,107.78 = 1,189,796.45 : x
2. Step 2: Convert to fraction form
   2,156,605.97/2,976,107.78 = 1,189,796.45/x
3. Step 3: Cross multiply
   2,156,605.97x = 2,976,107.78 × 1,189,796.45
4. Step 4: Simplify right side
   2,156,605.97x = 3,540,962,459,555.33
5. Step 5: Solve for x
   x = 3,540,962,459,555.33/2,156,605.97
6. Step 6: Final answer
   x = 1,641,914.43