Finding the Fourth Proportional to 1,317.27, 1,817.59 and 757.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.27 : 1,817.59 = 757.53 : x
2. Step 2: Convert to fraction form
   1,317.27/1,817.59 = 757.53/x
3. Step 3: Cross multiply
   1,317.27x = 1,817.59 × 757.53
4. Step 4: Simplify right side
   1,317.27x = 1,376,878.95
5. Step 5: Solve for x
   x = 1,376,878.95/1,317.27
6. Step 6: Final answer
   x = 1,045.25