Finding the Fourth Proportional to 2,200,612.70, 3,301,903.20 and 781,687.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200,612.70 : 3,301,903.20 = 781,687.10 : x
2. Step 2: Convert to fraction form
   2,200,612.70/3,301,903.20 = 781,687.10/x
3. Step 3: Cross multiply
   2,200,612.70x = 3,301,903.20 × 781,687.10
4. Step 4: Simplify right side
   2,200,612.70x = 2,581,055,136,888.72
5. Step 5: Solve for x
   x = 2,581,055,136,888.72/2,200,612.70
6. Step 6: Final answer
   x = 1,172,880.23