Finding the Fourth Proportional to 1,017.82, 1,527.60 and 401.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.82 : 1,527.60 = 401.96 : x
2. Step 2: Convert to fraction form
   1,017.82/1,527.60 = 401.96/x
3. Step 3: Cross multiply
   1,017.82x = 1,527.60 × 401.96
4. Step 4: Simplify right side
   1,017.82x = 614,034.10
5. Step 5: Solve for x
   x = 614,034.10/1,017.82
6. Step 6: Final answer
   x = 603.28