Finding the Fourth Proportional to 2,474.89, 3,413.48 and 1,578.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,474.89 : 3,413.48 = 1,578.89 : x
2. Step 2: Convert to fraction form
   2,474.89/3,413.48 = 1,578.89/x
3. Step 3: Cross multiply
   2,474.89x = 3,413.48 × 1,578.89
4. Step 4: Simplify right side
   2,474.89x = 5,389,510.08
5. Step 5: Solve for x
   x = 5,389,510.08/2,474.89
6. Step 6: Final answer
   x = 2,177.68