Finding the Fourth Proportional to 1,085.37, 1,497.81 and 613.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.37 : 1,497.81 = 613.38 : x
2. Step 2: Convert to fraction form
   1,085.37/1,497.81 = 613.38/x
3. Step 3: Cross multiply
   1,085.37x = 1,497.81 × 613.38
4. Step 4: Simplify right side
   1,085.37x = 918,734.61
5. Step 5: Solve for x
   x = 918,734.61/1,085.37
6. Step 6: Final answer
   x = 846.47