Finding the Fourth Proportional to 1,085.39, 1,497.86 and 613.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.39 : 1,497.86 = 613.27 : x
2. Step 2: Convert to fraction form
   1,085.39/1,497.86 = 613.27/x
3. Step 3: Cross multiply
   1,085.39x = 1,497.86 × 613.27
4. Step 4: Simplify right side
   1,085.39x = 918,592.60
5. Step 5: Solve for x
   x = 918,592.60/1,085.39
6. Step 6: Final answer
   x = 846.32