Finding the Fourth Proportional to 2,099,412.70, 3,149,618.73 and 679,468.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,412.70 : 3,149,618.73 = 679,468.78 : x
2. Step 2: Convert to fraction form
   2,099,412.70/3,149,618.73 = 679,468.78/x
3. Step 3: Cross multiply
   2,099,412.70x = 3,149,618.73 × 679,468.78
4. Step 4: Simplify right side
   2,099,412.70x = 2,140,067,595,938.25
5. Step 5: Solve for x
   x = 2,140,067,595,938.25/2,099,412.70
6. Step 6: Final answer
   x = 1,019,364.89