Finding the Fourth Proportional to 2,612,936.69, 3,919,403.59 and 815,974.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612,936.69 : 3,919,403.59 = 815,974.17 : x
2. Step 2: Convert to fraction form
   2,612,936.69/3,919,403.59 = 815,974.17/x
3. Step 3: Cross multiply
   2,612,936.69x = 3,919,403.59 × 815,974.17
4. Step 4: Simplify right side
   2,612,936.69x = 3,198,132,074,507.57
5. Step 5: Solve for x
   x = 3,198,132,074,507.57/2,612,936.69
6. Step 6: Final answer
   x = 1,223,960.80