Finding the Fourth Proportional to 2,099,888.79, 3,150,292.56 and 680,088.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099,888.79 : 3,150,292.56 = 680,088.39 : x
2. Step 2: Convert to fraction form
   2,099,888.79/3,150,292.56 = 680,088.39/x
3. Step 3: Cross multiply
   2,099,888.79x = 3,150,292.56 × 680,088.39
4. Step 4: Simplify right side
   2,099,888.79x = 2,142,477,395,159.38
5. Step 5: Solve for x
   x = 2,142,477,395,159.38/2,099,888.79
6. Step 6: Final answer
   x = 1,020,281.36