Finding the Fourth Proportional to 2,631,834.74, 3,948,128.60 and 810,353.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,834.74 : 3,948,128.60 = 810,353.72 : x
2. Step 2: Convert to fraction form
   2,631,834.74/3,948,128.60 = 810,353.72/x
3. Step 3: Cross multiply
   2,631,834.74x = 3,948,128.60 × 810,353.72
4. Step 4: Simplify right side
   2,631,834.74x = 3,199,380,703,866.95
5. Step 5: Solve for x
   x = 3,199,380,703,866.95/2,631,834.74
6. Step 6: Final answer
   x = 1,215,646.50