Finding the Fourth Proportional to 1,017.43, 1,526.04 and 401.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.43 : 1,526.04 = 401.63 : x
2. Step 2: Convert to fraction form
   1,017.43/1,526.04 = 401.63/x
3. Step 3: Cross multiply
   1,017.43x = 1,526.04 × 401.63
4. Step 4: Simplify right side
   1,017.43x = 612,895.82
5. Step 5: Solve for x
   x = 612,895.82/1,017.43
6. Step 6: Final answer
   x = 602.40