Finding the Fourth Proportional to 1,081.71, 1,493.32 and 729.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.71 : 1,493.32 = 729.48 : x
2. Step 2: Convert to fraction form
   1,081.71/1,493.32 = 729.48/x
3. Step 3: Cross multiply
   1,081.71x = 1,493.32 × 729.48
4. Step 4: Simplify right side
   1,081.71x = 1,089,347.07
5. Step 5: Solve for x
   x = 1,089,347.07/1,081.71
6. Step 6: Final answer
   x = 1,007.06