Finding the Fourth Proportional to 3,210.56, 4,816.16 and 1,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,210.56 : 4,816.16 = 1,018.72 : x
2. Step 2: Convert to fraction form
   3,210.56/4,816.16 = 1,018.72/x
3. Step 3: Cross multiply
   3,210.56x = 4,816.16 × 1,018.72
4. Step 4: Simplify right side
   3,210.56x = 4,906,318.52
5. Step 5: Solve for x
   x = 4,906,318.52/3,210.56
6. Step 6: Final answer
   x = 1,528.18