Finding the Fourth Proportional to 2,587.61, 3,880.98 and 738.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.61 : 3,880.98 = 738.30 : x
2. Step 2: Convert to fraction form
   2,587.61/3,880.98 = 738.30/x
3. Step 3: Cross multiply
   2,587.61x = 3,880.98 × 738.30
4. Step 4: Simplify right side
   2,587.61x = 2,865,342.09
5. Step 5: Solve for x
   x = 2,865,342.09/2,587.61
6. Step 6: Final answer
   x = 1,107.33