Finding the Fourth Proportional to 1,018.09, 1,526.46 and 401.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.09 : 1,526.46 = 401.41 : x
2. Step 2: Convert to fraction form
   1,018.09/1,526.46 = 401.41/x
3. Step 3: Cross multiply
   1,018.09x = 1,526.46 × 401.41
4. Step 4: Simplify right side
   1,018.09x = 612,736.31
5. Step 5: Solve for x
   x = 612,736.31/1,018.09
6. Step 6: Final answer
   x = 601.85