Finding the Fourth Proportional to 3,870.24, 5,343.71 and 2,380.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.24 : 5,343.71 = 2,380.16 : x
2. Step 2: Convert to fraction form
   3,870.24/5,343.71 = 2,380.16/x
3. Step 3: Cross multiply
   3,870.24x = 5,343.71 × 2,380.16
4. Step 4: Simplify right side
   3,870.24x = 12,718,884.79
5. Step 5: Solve for x
   x = 12,718,884.79/3,870.24
6. Step 6: Final answer
   x = 3,286.33