Finding the Fourth Proportional to 2,587.56, 3,547.56 and 2,540.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.56 : 3,547.56 = 2,540.76 : x
2. Step 2: Convert to fraction form
   2,587.56/3,547.56 = 2,540.76/x
3. Step 3: Cross multiply
   2,587.56x = 3,547.56 × 2,540.76
4. Step 4: Simplify right side
   2,587.56x = 9,013,498.55
5. Step 5: Solve for x
   x = 9,013,498.55/2,587.56
6. Step 6: Final answer
   x = 3,483.40