Finding the Fourth Proportional to 2,760.24, 4,137.12 and 1,218

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.24 : 4,137.12 = 1,218 : x
2. Step 2: Convert to fraction form
   2,760.24/4,137.12 = 1,218/x
3. Step 3: Cross multiply
   2,760.24x = 4,137.12 × 1,218
4. Step 4: Simplify right side
   2,760.24x = 5,039,012.16
5. Step 5: Solve for x
   x = 5,039,012.16/2,760.24
6. Step 6: Final answer
   x = 1,825.57