Finding the Fourth Proportional to 2,756,769.87, 4,135,414.10 and 811,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,756,769.87 : 4,135,414.10 = 811,499.72 : x
2. Step 2: Convert to fraction form
   2,756,769.87/4,135,414.10 = 811,499.72/x
3. Step 3: Cross multiply
   2,756,769.87x = 4,135,414.10 × 811,499.72
4. Step 4: Simplify right side
   2,756,769.87x = 3,355,887,359,499.48
5. Step 5: Solve for x
   x = 3,355,887,359,499.48/2,756,769.87
6. Step 6: Final answer
   x = 1,217,325.90