Finding the Fourth Proportional to 2,442,290.20, 3,660,849.72 and 821,516.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442,290.20 : 3,660,849.72 = 821,516.08 : x
2. Step 2: Convert to fraction form
   2,442,290.20/3,660,849.72 = 821,516.08/x
3. Step 3: Cross multiply
   2,442,290.20x = 3,660,849.72 × 821,516.08
4. Step 4: Simplify right side
   2,442,290.20x = 3,007,446,911,443.50
5. Step 5: Solve for x
   x = 3,007,446,911,443.50/2,442,290.20
6. Step 6: Final answer
   x = 1,231,404.41