Finding the Fourth Proportional to 2,658,842.38, 3,987,427.04 and 861,308.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658,842.38 : 3,987,427.04 = 861,308.82 : x
2. Step 2: Convert to fraction form
   2,658,842.38/3,987,427.04 = 861,308.82/x
3. Step 3: Cross multiply
   2,658,842.38x = 3,987,427.04 × 861,308.82
4. Step 4: Simplify right side
   2,658,842.38x = 3,434,406,078,658.49
5. Step 5: Solve for x
   x = 3,434,406,078,658.49/2,658,842.38
6. Step 6: Final answer
   x = 1,291,692.24