Finding the Fourth Proportional to 2,660,034.53, 3,990,612.81 and 862,778.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,034.53 : 3,990,612.81 = 862,778.43 : x
2. Step 2: Convert to fraction form
   2,660,034.53/3,990,612.81 = 862,778.43/x
3. Step 3: Cross multiply
   2,660,034.53x = 3,990,612.81 × 862,778.43
4. Step 4: Simplify right side
   2,660,034.53x = 3,443,014,654,949.69
5. Step 5: Solve for x
   x = 3,443,014,654,949.69/2,660,034.53
6. Step 6: Final answer
   x = 1,294,349.61