Finding the Fourth Proportional to 2,085,861.20, 3,123,262.20 and 1,643,493.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085,861.20 : 3,123,262.20 = 1,643,493.20 : x
2. Step 2: Convert to fraction form
   2,085,861.20/3,123,262.20 = 1,643,493.20/x
3. Step 3: Cross multiply
   2,085,861.20x = 3,123,262.20 × 1,643,493.20
4. Step 4: Simplify right side
   2,085,861.20x = 5,133,060,187,517.04
5. Step 5: Solve for x
   x = 5,133,060,187,517.04/2,085,861.20
6. Step 6: Final answer
   x = 2,460,882.91