Finding the Fourth Proportional to 1,055.24, 1,456.12 and 613.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.24 : 1,456.12 = 613.24 : x
2. Step 2: Convert to fraction form
   1,055.24/1,456.12 = 613.24/x
3. Step 3: Cross multiply
   1,055.24x = 1,456.12 × 613.24
4. Step 4: Simplify right side
   1,055.24x = 892,951.03
5. Step 5: Solve for x
   x = 892,951.03/1,055.24
6. Step 6: Final answer
   x = 846.21