Finding the Fourth Proportional to 2,099,400.48, 3,149,600.49 and 679,456.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,400.48 : 3,149,600.49 = 679,456.56 : x
2. Step 2: Convert to fraction form
   2,099,400.48/3,149,600.49 = 679,456.56/x
3. Step 3: Cross multiply
   2,099,400.48x = 3,149,600.49 × 679,456.56
4. Step 4: Simplify right side
   2,099,400.48x = 2,140,016,714,309.72
5. Step 5: Solve for x
   x = 2,140,016,714,309.72/2,099,400.48
6. Step 6: Final answer
   x = 1,019,346.59