Finding the Fourth Proportional to 3,716.16, 5,128.20 and 2,144.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,716.16 : 5,128.20 = 2,144.16 : x
2. Step 2: Convert to fraction form
   3,716.16/5,128.20 = 2,144.16/x
3. Step 3: Cross multiply
   3,716.16x = 5,128.20 × 2,144.16
4. Step 4: Simplify right side
   3,716.16x = 10,995,681.31
5. Step 5: Solve for x
   x = 10,995,681.31/3,716.16
6. Step 6: Final answer
   x = 2,958.88