Finding the Fourth Proportional to 1,073.39, 1,480.78 and 742.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.39 : 1,480.78 = 742.28 : x
2. Step 2: Convert to fraction form
   1,073.39/1,480.78 = 742.28/x
3. Step 3: Cross multiply
   1,073.39x = 1,480.78 × 742.28
4. Step 4: Simplify right side
   1,073.39x = 1,099,153.38
5. Step 5: Solve for x
   x = 1,099,153.38/1,073.39
6. Step 6: Final answer
   x = 1,024.00