Finding the Fourth Proportional to 2,617,643.31, 3,926,350.73 and 820,485.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617,643.31 : 3,926,350.73 = 820,485.75 : x
2. Step 2: Convert to fraction form
   2,617,643.31/3,926,350.73 = 820,485.75/x
3. Step 3: Cross multiply
   2,617,643.31x = 3,926,350.73 × 820,485.75
4. Step 4: Simplify right side
   2,617,643.31x = 3,221,514,819,364.67
5. Step 5: Solve for x
   x = 3,221,514,819,364.67/2,617,643.31
6. Step 6: Final answer
   x = 1,230,692.82