Finding the Fourth Proportional to 1,609.10, 2,413.29 and 742.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.10 : 2,413.29 = 742.58 : x
2. Step 2: Convert to fraction form
   1,609.10/2,413.29 = 742.58/x
3. Step 3: Cross multiply
   1,609.10x = 2,413.29 × 742.58
4. Step 4: Simplify right side
   1,609.10x = 1,792,060.89
5. Step 5: Solve for x
   x = 1,792,060.89/1,609.10
6. Step 6: Final answer
   x = 1,113.70