Finding the Fourth Proportional to 2,099,441.80, 3,149,469.90 and 679,256.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,441.80 : 3,149,469.90 = 679,256.20 : x
2. Step 2: Convert to fraction form
   2,099,441.80/3,149,469.90 = 679,256.20/x
3. Step 3: Cross multiply
   2,099,441.80x = 3,149,469.90 × 679,256.20
4. Step 4: Simplify right side
   2,099,441.80x = 2,139,296,956,288.38
5. Step 5: Solve for x
   x = 2,139,296,956,288.38/2,099,441.80
6. Step 6: Final answer
   x = 1,018,983.69