Finding the Fourth Proportional to 1,003.89, 1,505.99 and 484.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.89 : 1,505.99 = 484.18 : x
2. Step 2: Convert to fraction form
   1,003.89/1,505.99 = 484.18/x
3. Step 3: Cross multiply
   1,003.89x = 1,505.99 × 484.18
4. Step 4: Simplify right side
   1,003.89x = 729,167.68
5. Step 5: Solve for x
   x = 729,167.68/1,003.89
6. Step 6: Final answer
   x = 726.34