Finding the Fourth Proportional to 2,311.39, 3,466.71 and 667.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.39 : 3,466.71 = 667.57 : x
2. Step 2: Convert to fraction form
   2,311.39/3,466.71 = 667.57/x
3. Step 3: Cross multiply
   2,311.39x = 3,466.71 × 667.57
4. Step 4: Simplify right side
   2,311.39x = 2,314,271.59
5. Step 5: Solve for x
   x = 2,314,271.59/2,311.39
6. Step 6: Final answer
   x = 1,001.25