Finding the Fourth Proportional to 1,055.43, 1,456.45 and 613.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.43 : 1,456.45 = 613.33 : x
2. Step 2: Convert to fraction form
   1,055.43/1,456.45 = 613.33/x
3. Step 3: Cross multiply
   1,055.43x = 1,456.45 × 613.33
4. Step 4: Simplify right side
   1,055.43x = 893,279.30
5. Step 5: Solve for x
   x = 893,279.30/1,055.43
6. Step 6: Final answer
   x = 846.37