Finding the Fourth Proportional to 1,084.71, 1,496.54 and 612.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.71 : 1,496.54 = 612.54 : x
2. Step 2: Convert to fraction form
   1,084.71/1,496.54 = 612.54/x
3. Step 3: Cross multiply
   1,084.71x = 1,496.54 × 612.54
4. Step 4: Simplify right side
   1,084.71x = 916,687.55
5. Step 5: Solve for x
   x = 916,687.55/1,084.71
6. Step 6: Final answer
   x = 845.10