Finding the Fourth Proportional to 2,018.56, 3,028.16 and 864.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.56 : 3,028.16 = 864.32 : x
2. Step 2: Convert to fraction form
   2,018.56/3,028.16 = 864.32/x
3. Step 3: Cross multiply
   2,018.56x = 3,028.16 × 864.32
4. Step 4: Simplify right side
   2,018.56x = 2,617,299.25
5. Step 5: Solve for x
   x = 2,617,299.25/2,018.56
6. Step 6: Final answer
   x = 1,296.62