Finding the Fourth Proportional to 2,106,997.78, 3,160,895.32 and 668,043.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106,997.78 : 3,160,895.32 = 668,043.61 : x
2. Step 2: Convert to fraction form
   2,106,997.78/3,160,895.32 = 668,043.61/x
3. Step 3: Cross multiply
   2,106,997.78x = 3,160,895.32 × 668,043.61
4. Step 4: Simplify right side
   2,106,997.78x = 2,111,615,920,404.91
5. Step 5: Solve for x
   x = 2,111,615,920,404.91/2,106,997.78
6. Step 6: Final answer
   x = 1,002,191.81