Finding the Fourth Proportional to 3,860.55, 5,327.57 and 2,266.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.55 : 5,327.57 = 2,266.89 : x
2. Step 2: Convert to fraction form
   3,860.55/5,327.57 = 2,266.89/x
3. Step 3: Cross multiply
   3,860.55x = 5,327.57 × 2,266.89
4. Step 4: Simplify right side
   3,860.55x = 12,077,015.16
5. Step 5: Solve for x
   x = 12,077,015.16/3,860.55
6. Step 6: Final answer
   x = 3,128.31