Finding the Fourth Proportional to 2,611.53, 3,920.04 and 2,552.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.53 : 3,920.04 = 2,552.76 : x
2. Step 2: Convert to fraction form
   2,611.53/3,920.04 = 2,552.76/x
3. Step 3: Cross multiply
   2,611.53x = 3,920.04 × 2,552.76
4. Step 4: Simplify right side
   2,611.53x = 10,006,921.31
5. Step 5: Solve for x
   x = 10,006,921.31/2,611.53
6. Step 6: Final answer
   x = 3,831.82