Finding the Fourth Proportional to 1,101.74, 1,651.33 and 669.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.74 : 1,651.33 = 669.18 : x
2. Step 2: Convert to fraction form
   1,101.74/1,651.33 = 669.18/x
3. Step 3: Cross multiply
   1,101.74x = 1,651.33 × 669.18
4. Step 4: Simplify right side
   1,101.74x = 1,105,037.01
5. Step 5: Solve for x
   x = 1,105,037.01/1,101.74
6. Step 6: Final answer
   x = 1,002.99