Finding the Fourth Proportional to 1,017.33, 1,522.55 and 627.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.33 : 1,522.55 = 627.59 : x
2. Step 2: Convert to fraction form
   1,017.33/1,522.55 = 627.59/x
3. Step 3: Cross multiply
   1,017.33x = 1,522.55 × 627.59
4. Step 4: Simplify right side
   1,017.33x = 955,528.29
5. Step 5: Solve for x
   x = 955,528.29/1,017.33
6. Step 6: Final answer
   x = 939.25