Finding the Fourth Proportional to 2,612,938.81, 3,919,406.77 and 815,976.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612,938.81 : 3,919,406.77 = 815,976.29 : x
2. Step 2: Convert to fraction form
   2,612,938.81/3,919,406.77 = 815,976.29/x
3. Step 3: Cross multiply
   2,612,938.81x = 3,919,406.77 × 815,976.29
4. Step 4: Simplify right side
   2,612,938.81x = 3,198,142,995,185.48
5. Step 5: Solve for x
   x = 3,198,142,995,185.48/2,612,938.81
6. Step 6: Final answer
   x = 1,223,963.98