Finding the Fourth Proportional to 2,587.62, 3,880.71 and 1,126.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.62 : 3,880.71 = 1,126.41 : x
2. Step 2: Convert to fraction form
   2,587.62/3,880.71 = 1,126.41/x
3. Step 3: Cross multiply
   2,587.62x = 3,880.71 × 1,126.41
4. Step 4: Simplify right side
   2,587.62x = 4,371,270.55
5. Step 5: Solve for x
   x = 4,371,270.55/2,587.62
6. Step 6: Final answer
   x = 1,689.30