Finding the Fourth Proportional to 1,317.82, 1,818.56 and 758.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.82 : 1,818.56 = 758.30 : x
2. Step 2: Convert to fraction form
   1,317.82/1,818.56 = 758.30/x
3. Step 3: Cross multiply
   1,317.82x = 1,818.56 × 758.30
4. Step 4: Simplify right side
   1,317.82x = 1,379,014.05
5. Step 5: Solve for x
   x = 1,379,014.05/1,317.82
6. Step 6: Final answer
   x = 1,046.44