Finding the Fourth Proportional to 2,611.09, 3,627.43 and 2,586.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.09 : 3,627.43 = 2,586.79 : x
2. Step 2: Convert to fraction form
   2,611.09/3,627.43 = 2,586.79/x
3. Step 3: Cross multiply
   2,611.09x = 3,627.43 × 2,586.79
4. Step 4: Simplify right side
   2,611.09x = 9,383,391.86
5. Step 5: Solve for x
   x = 9,383,391.86/2,611.09
6. Step 6: Final answer
   x = 3,593.67