Finding the Fourth Proportional to 1,224.49, 1,689.69 and 727.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.49 : 1,689.69 = 727.25 : x
2. Step 2: Convert to fraction form
   1,224.49/1,689.69 = 727.25/x
3. Step 3: Cross multiply
   1,224.49x = 1,689.69 × 727.25
4. Step 4: Simplify right side
   1,224.49x = 1,228,829.45
5. Step 5: Solve for x
   x = 1,228,829.45/1,224.49
6. Step 6: Final answer
   x = 1,003.54