Finding the Fourth Proportional to 3,911.81, 5,865.89 and 2,268.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.81 : 5,865.89 = 2,268.81 : x
2. Step 2: Convert to fraction form
   3,911.81/5,865.89 = 2,268.81/x
3. Step 3: Cross multiply
   3,911.81x = 5,865.89 × 2,268.81
4. Step 4: Simplify right side
   3,911.81x = 13,308,578.55
5. Step 5: Solve for x
   x = 13,308,578.55/3,911.81
6. Step 6: Final answer
   x = 3,402.16