Finding the Fourth Proportional to 2,138,089.72, 3,204,881.78 and 789,388.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,089.72 : 3,204,881.78 = 789,388.68 : x
2. Step 2: Convert to fraction form
   2,138,089.72/3,204,881.78 = 789,388.68/x
3. Step 3: Cross multiply
   2,138,089.72x = 3,204,881.78 × 789,388.68
4. Step 4: Simplify right side
   2,138,089.72x = 2,529,897,397,870.25
5. Step 5: Solve for x
   x = 2,529,897,397,870.25/2,138,089.72
6. Step 6: Final answer
   x = 1,183,251.28