Finding the Fourth Proportional to 1,686,640.72, 2,529,919.04 and 789,086.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,640.72 : 2,529,919.04 = 789,086.69 : x
2. Step 2: Convert to fraction form
   1,686,640.72/2,529,919.04 = 789,086.69/x
3. Step 3: Cross multiply
   1,686,640.72x = 2,529,919.04 × 789,086.69
4. Step 4: Simplify right side
   1,686,640.72x = 1,996,325,441,241.58
5. Step 5: Solve for x
   x = 1,996,325,441,241.58/1,686,640.72
6. Step 6: Final answer
   x = 1,183,610.37