Finding the Fourth Proportional to 1,055.33, 1,456.18 and 613.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.33 : 1,456.18 = 613.22 : x
2. Step 2: Convert to fraction form
   1,055.33/1,456.18 = 613.22/x
3. Step 3: Cross multiply
   1,055.33x = 1,456.18 × 613.22
4. Step 4: Simplify right side
   1,055.33x = 892,958.08
5. Step 5: Solve for x
   x = 892,958.08/1,055.33
6. Step 6: Final answer
   x = 846.14