Finding the Fourth Proportional to 1,017.27, 1,522.35 and 627.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.27 : 1,522.35 = 627.18 : x
2. Step 2: Convert to fraction form
   1,017.27/1,522.35 = 627.18/x
3. Step 3: Cross multiply
   1,017.27x = 1,522.35 × 627.18
4. Step 4: Simplify right side
   1,017.27x = 954,787.47
5. Step 5: Solve for x
   x = 954,787.47/1,017.27
6. Step 6: Final answer
   x = 938.58