Finding the Fourth Proportional to 1,076.24, 1,485.16 and 662.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.24 : 1,485.16 = 662.16 : x
2. Step 2: Convert to fraction form
   1,076.24/1,485.16 = 662.16/x
3. Step 3: Cross multiply
   1,076.24x = 1,485.16 × 662.16
4. Step 4: Simplify right side
   1,076.24x = 983,413.55
5. Step 5: Solve for x
   x = 983,413.55/1,076.24
6. Step 6: Final answer
   x = 913.75