Finding the Fourth Proportional to 1,055.34, 1,455.98 and 613.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.34 : 1,455.98 = 613.08 : x
2. Step 2: Convert to fraction form
   1,055.34/1,455.98 = 613.08/x
3. Step 3: Cross multiply
   1,055.34x = 1,455.98 × 613.08
4. Step 4: Simplify right side
   1,055.34x = 892,629.15
5. Step 5: Solve for x
   x = 892,629.15/1,055.34
6. Step 6: Final answer
   x = 845.82