Finding the Fourth Proportional to 1,018.28, 1,525.59 and 963.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.28 : 1,525.59 = 963.60 : x
2. Step 2: Convert to fraction form
   1,018.28/1,525.59 = 963.60/x
3. Step 3: Cross multiply
   1,018.28x = 1,525.59 × 963.60
4. Step 4: Simplify right side
   1,018.28x = 1,470,058.52
5. Step 5: Solve for x
   x = 1,470,058.52/1,018.28
6. Step 6: Final answer
   x = 1,443.68