Finding the Fourth Proportional to 1,055.34, 1,456.43 and 613.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.34 : 1,456.43 = 613.38 : x
2. Step 2: Convert to fraction form
   1,055.34/1,456.43 = 613.38/x
3. Step 3: Cross multiply
   1,055.34x = 1,456.43 × 613.38
4. Step 4: Simplify right side
   1,055.34x = 893,341.97
5. Step 5: Solve for x
   x = 893,341.97/1,055.34
6. Step 6: Final answer
   x = 846.50