Finding the Fourth Proportional to 1,389,894.12, 2,083,413.69 and 789,573.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,894.12 : 2,083,413.69 = 789,573.42 : x
2. Step 2: Convert to fraction form
   1,389,894.12/2,083,413.69 = 789,573.42/x
3. Step 3: Cross multiply
   1,389,894.12x = 2,083,413.69 × 789,573.42
4. Step 4: Simplify right side
   1,389,894.12x = 1,645,008,072,488.12
5. Step 5: Solve for x
   x = 1,645,008,072,488.12/1,389,894.12
6. Step 6: Final answer
   x = 1,183,549.20