Finding the Fourth Proportional to 1,448.67, 2,171.33 and 667.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.67 : 2,171.33 = 667.03 : x
2. Step 2: Convert to fraction form
   1,448.67/2,171.33 = 667.03/x
3. Step 3: Cross multiply
   1,448.67x = 2,171.33 × 667.03
4. Step 4: Simplify right side
   1,448.67x = 1,448,338.91
5. Step 5: Solve for x
   x = 1,448,338.91/1,448.67
6. Step 6: Final answer
   x = 999.77