Finding the Fourth Proportional to 3,871.72, 5,343.42 and 2,299.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.72 : 5,343.42 = 2,299.81 : x
2. Step 2: Convert to fraction form
   3,871.72/5,343.42 = 2,299.81/x
3. Step 3: Cross multiply
   3,871.72x = 5,343.42 × 2,299.81
4. Step 4: Simplify right side
   3,871.72x = 12,288,850.75
5. Step 5: Solve for x
   x = 12,288,850.75/3,871.72
6. Step 6: Final answer
   x = 3,174.00