Finding the Fourth Proportional to 1,055.53, 1,456.28 and 613.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.53 : 1,456.28 = 613.27 : x
2. Step 2: Convert to fraction form
   1,055.53/1,456.28 = 613.27/x
3. Step 3: Cross multiply
   1,055.53x = 1,456.28 × 613.27
4. Step 4: Simplify right side
   1,055.53x = 893,093.89
5. Step 5: Solve for x
   x = 893,093.89/1,055.53
6. Step 6: Final answer
   x = 846.11