Finding the Fourth Proportional to 1,398.29, 2,097.43 and 667.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.29 : 2,097.43 = 667.69 : x
2. Step 2: Convert to fraction form
   1,398.29/2,097.43 = 667.69/x
3. Step 3: Cross multiply
   1,398.29x = 2,097.43 × 667.69
4. Step 4: Simplify right side
   1,398.29x = 1,400,433.04
5. Step 5: Solve for x
   x = 1,400,433.04/1,398.29
6. Step 6: Final answer
   x = 1,001.53