Finding the Fourth Proportional to 1,055.36, 1,456.43 and 613.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.36 : 1,456.43 = 613.23 : x
2. Step 2: Convert to fraction form
   1,055.36/1,456.43 = 613.23/x
3. Step 3: Cross multiply
   1,055.36x = 1,456.43 × 613.23
4. Step 4: Simplify right side
   1,055.36x = 893,123.50
5. Step 5: Solve for x
   x = 893,123.50/1,055.36
6. Step 6: Final answer
   x = 846.28