Finding the Fourth Proportional to 2,289.69, 3,434.78 and 729.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.69 : 3,434.78 = 729.32 : x
2. Step 2: Convert to fraction form
   2,289.69/3,434.78 = 729.32/x
3. Step 3: Cross multiply
   2,289.69x = 3,434.78 × 729.32
4. Step 4: Simplify right side
   2,289.69x = 2,505,061.42
5. Step 5: Solve for x
   x = 2,505,061.42/2,289.69
6. Step 6: Final answer
   x = 1,094.06