Finding the Fourth Proportional to 2,146,456.20, 3,221,757.90 and 1,306,648.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146,456.20 : 3,221,757.90 = 1,306,648.20 : x
2. Step 2: Convert to fraction form
   2,146,456.20/3,221,757.90 = 1,306,648.20/x
3. Step 3: Cross multiply
   2,146,456.20x = 3,221,757.90 × 1,306,648.20
4. Step 4: Simplify right side
   2,146,456.20x = 4,209,704,160,870.78
5. Step 5: Solve for x
   x = 4,209,704,160,870.78/2,146,456.20
6. Step 6: Final answer
   x = 1,961,234.60