Finding the Fourth Proportional to 2,612,938.94, 3,919,406.96 and 815,976.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612,938.94 : 3,919,406.96 = 815,976.42 : x
2. Step 2: Convert to fraction form
   2,612,938.94/3,919,406.96 = 815,976.42/x
3. Step 3: Cross multiply
   2,612,938.94x = 3,919,406.96 × 815,976.42
4. Step 4: Simplify right side
   2,612,938.94x = 3,198,143,642,496.18
5. Step 5: Solve for x
   x = 3,198,143,642,496.18/2,612,938.94
6. Step 6: Final answer
   x = 1,223,964.17