Finding the Fourth Proportional to 1,055.49, 1,456.47 and 613.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.49 : 1,456.47 = 613.42 : x
2. Step 2: Convert to fraction form
   1,055.49/1,456.47 = 613.42/x
3. Step 3: Cross multiply
   1,055.49x = 1,456.47 × 613.42
4. Step 4: Simplify right side
   1,055.49x = 893,427.83
5. Step 5: Solve for x
   x = 893,427.83/1,055.49
6. Step 6: Final answer
   x = 846.46