Finding the Fourth Proportional to 2,311.18, 3,467.37 and 667.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.18 : 3,467.37 = 667.86 : x
2. Step 2: Convert to fraction form
   2,311.18/3,467.37 = 667.86/x
3. Step 3: Cross multiply
   2,311.18x = 3,467.37 × 667.86
4. Step 4: Simplify right side
   2,311.18x = 2,315,717.73
5. Step 5: Solve for x
   x = 2,315,717.73/2,311.18
6. Step 6: Final answer
   x = 1,001.96