Finding the Fourth Proportional to 2,099,402.69, 3,149,603.72 and 679,458.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,402.69 : 3,149,603.72 = 679,458.77 : x
2. Step 2: Convert to fraction form
   2,099,402.69/3,149,603.72 = 679,458.77/x
3. Step 3: Cross multiply
   2,099,402.69x = 3,149,603.72 × 679,458.77
4. Step 4: Simplify right side
   2,099,402.69x = 2,140,025,855,529.25
5. Step 5: Solve for x
   x = 2,140,025,855,529.25/2,099,402.69
6. Step 6: Final answer
   x = 1,019,349.87