Finding the Fourth Proportional to 1,317.89, 1,818.87 and 758.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.89 : 1,818.87 = 758.35 : x
2. Step 2: Convert to fraction form
   1,317.89/1,818.87 = 758.35/x
3. Step 3: Cross multiply
   1,317.89x = 1,818.87 × 758.35
4. Step 4: Simplify right side
   1,317.89x = 1,379,341.96
5. Step 5: Solve for x
   x = 1,379,341.96/1,317.89
6. Step 6: Final answer
   x = 1,046.63