Finding the Fourth Proportional to 1,084.42, 1,496.46 and 618.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.42 : 1,496.46 = 618.58 : x
2. Step 2: Convert to fraction form
   1,084.42/1,496.46 = 618.58/x
3. Step 3: Cross multiply
   1,084.42x = 1,496.46 × 618.58
4. Step 4: Simplify right side
   1,084.42x = 925,680.23
5. Step 5: Solve for x
   x = 925,680.23/1,084.42
6. Step 6: Final answer
   x = 853.62