Finding the Fourth Proportional to 1,072.72, 1,480.28 and 600.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.72 : 1,480.28 = 600.60 : x
2. Step 2: Convert to fraction form
   1,072.72/1,480.28 = 600.60/x
3. Step 3: Cross multiply
   1,072.72x = 1,480.28 × 600.60
4. Step 4: Simplify right side
   1,072.72x = 889,048.77
5. Step 5: Solve for x
   x = 889,048.77/1,072.72
6. Step 6: Final answer
   x = 828.78