Finding the Fourth Proportional to 1,433,708.12, 1,978,517.73 and 789,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,708.12 : 1,978,517.73 = 789,123.69 : x
2. Step 2: Convert to fraction form
   1,433,708.12/1,978,517.73 = 789,123.69/x
3. Step 3: Cross multiply
   1,433,708.12x = 1,978,517.73 × 789,123.69
4. Step 4: Simplify right side
   1,433,708.12x = 1,561,295,211,828.02
5. Step 5: Solve for x
   x = 1,561,295,211,828.02/1,433,708.12
6. Step 6: Final answer
   x = 1,088,990.98