Finding the Fourth Proportional to 2,099,400.68, 3,149,600.76 and 679,456.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,400.68 : 3,149,600.76 = 679,456.77 : x
2. Step 2: Convert to fraction form
   2,099,400.68/3,149,600.76 = 679,456.77/x
3. Step 3: Cross multiply
   2,099,400.68x = 3,149,600.76 × 679,456.77
4. Step 4: Simplify right side
   2,099,400.68x = 2,140,017,559,179.15
5. Step 5: Solve for x
   x = 2,140,017,559,179.15/2,099,400.68
6. Step 6: Final answer
   x = 1,019,346.89