Finding the Fourth Proportional to 2,616.16, 3,927.12 and 1,078.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.16 : 3,927.12 = 1,078.24 : x
2. Step 2: Convert to fraction form
   2,616.16/3,927.12 = 1,078.24/x
3. Step 3: Cross multiply
   2,616.16x = 3,927.12 × 1,078.24
4. Step 4: Simplify right side
   2,616.16x = 4,234,377.87
5. Step 5: Solve for x
   x = 4,234,377.87/2,616.16
6. Step 6: Final answer
   x = 1,618.55