Finding the Fourth Proportional to 2,148.23, 3,222.20 and 667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.23 : 3,222.20 = 667.42 : x
2. Step 2: Convert to fraction form
   2,148.23/3,222.20 = 667.42/x
3. Step 3: Cross multiply
   2,148.23x = 3,222.20 × 667.42
4. Step 4: Simplify right side
   2,148.23x = 2,150,560.72
5. Step 5: Solve for x
   x = 2,150,560.72/2,148.23
6. Step 6: Final answer
   x = 1,001.08