Finding the Fourth Proportional to 1,227.50, 1,693.59 and 729.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.50 : 1,693.59 = 729.89 : x
2. Step 2: Convert to fraction form
   1,227.50/1,693.59 = 729.89/x
3. Step 3: Cross multiply
   1,227.50x = 1,693.59 × 729.89
4. Step 4: Simplify right side
   1,227.50x = 1,236,134.41
5. Step 5: Solve for x
   x = 1,236,134.41/1,227.50
6. Step 6: Final answer
   x = 1,007.03