Finding the Fourth Proportional to 2,609.49, 3,915.59 and 1,149.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.49 : 3,915.59 = 1,149.87 : x
2. Step 2: Convert to fraction form
   2,609.49/3,915.59 = 1,149.87/x
3. Step 3: Cross multiply
   2,609.49x = 3,915.59 × 1,149.87
4. Step 4: Simplify right side
   2,609.49x = 4,502,413.72
5. Step 5: Solve for x
   x = 4,502,413.72/2,609.49
6. Step 6: Final answer
   x = 1,725.40