Finding the Fourth Proportional to 1,055.27, 1,456.31 and 613.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.27 : 1,456.31 = 613.19 : x
2. Step 2: Convert to fraction form
   1,055.27/1,456.31 = 613.19/x
3. Step 3: Cross multiply
   1,055.27x = 1,456.31 × 613.19
4. Step 4: Simplify right side
   1,055.27x = 892,994.73
5. Step 5: Solve for x
   x = 892,994.73/1,055.27
6. Step 6: Final answer
   x = 846.22