Finding the Fourth Proportional to 1,489.49, 2,234.31 and 667.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.49 : 2,234.31 = 667.82 : x
2. Step 2: Convert to fraction form
   1,489.49/2,234.31 = 667.82/x
3. Step 3: Cross multiply
   1,489.49x = 2,234.31 × 667.82
4. Step 4: Simplify right side
   1,489.49x = 1,492,105.73
5. Step 5: Solve for x
   x = 1,492,105.73/1,489.49
6. Step 6: Final answer
   x = 1,001.76