Finding the Fourth Proportional to 3,217,196.18, 4,825,790.18 and 821,040.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,217,196.18 : 4,825,790.18 = 821,040.86 : x
2. Step 2: Convert to fraction form
   3,217,196.18/4,825,790.18 = 821,040.86/x
3. Step 3: Cross multiply
   3,217,196.18x = 4,825,790.18 × 821,040.86
4. Step 4: Simplify right side
   3,217,196.18x = 3,962,170,891,332.60
5. Step 5: Solve for x
   x = 3,962,170,891,332.60/3,217,196.18
6. Step 6: Final answer
   x = 1,231,560.24