Finding the Fourth Proportional to 1,018.27, 1,526.35 and 401.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.27 : 1,526.35 = 401.73 : x
2. Step 2: Convert to fraction form
   1,018.27/1,526.35 = 401.73/x
3. Step 3: Cross multiply
   1,018.27x = 1,526.35 × 401.73
4. Step 4: Simplify right side
   1,018.27x = 613,180.59
5. Step 5: Solve for x
   x = 613,180.59/1,018.27
6. Step 6: Final answer
   x = 602.18