Finding the Fourth Proportional to 2,099,400.37, 3,149,600.30 and 679,456.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,400.37 : 3,149,600.30 = 679,456.45 : x
2. Step 2: Convert to fraction form
   2,099,400.37/3,149,600.30 = 679,456.45/x
3. Step 3: Cross multiply
   2,099,400.37x = 3,149,600.30 × 679,456.45
4. Step 4: Simplify right side
   2,099,400.37x = 2,140,016,238,756.93
5. Step 5: Solve for x
   x = 2,140,016,238,756.93/2,099,400.37
6. Step 6: Final answer
   x = 1,019,346.41