Finding the Fourth Proportional to 1,020.36, 1,408.14 and 600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020.36 : 1,408.14 = 600.72 : x
2. Step 2: Convert to fraction form
   1,020.36/1,408.14 = 600.72/x
3. Step 3: Cross multiply
   1,020.36x = 1,408.14 × 600.72
4. Step 4: Simplify right side
   1,020.36x = 845,897.86
5. Step 5: Solve for x
   x = 845,897.86/1,020.36
6. Step 6: Final answer
   x = 829.02