Finding the Fourth Proportional to 2,099,890.29, 3,150,294.81 and 680,089.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,890.29 : 3,150,294.81 = 680,089.89 : x
2. Step 2: Convert to fraction form
   2,099,890.29/3,150,294.81 = 680,089.89/x
3. Step 3: Cross multiply
   2,099,890.29x = 3,150,294.81 × 680,089.89
4. Step 4: Simplify right side
   2,099,890.29x = 2,142,483,650,800.47
5. Step 5: Solve for x
   x = 2,142,483,650,800.47/2,099,890.29
6. Step 6: Final answer
   x = 1,020,283.61