Finding the Fourth Proportional to 2,092,665.40, 3,137,776.38 and 811,776.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092,665.40 : 3,137,776.38 = 811,776.15 : x
2. Step 2: Convert to fraction form
   2,092,665.40/3,137,776.38 = 811,776.15/x
3. Step 3: Cross multiply
   2,092,665.40x = 3,137,776.38 × 811,776.15
4. Step 4: Simplify right side
   2,092,665.40x = 2,547,172,038,142.33
5. Step 5: Solve for x
   x = 2,547,172,038,142.33/2,092,665.40
6. Step 6: Final answer
   x = 1,217,190.31