Finding the Fourth Proportional to 498.48, 744.83 and 401.28

Step by Step Solution

1. Step 1: Write the proportion equation
   498.48 : 744.83 = 401.28 : x
2. Step 2: Convert to fraction form
   498.48/744.83 = 401.28/x
3. Step 3: Cross multiply
   498.48x = 744.83 × 401.28
4. Step 4: Simplify right side
   498.48x = 298,883.38
5. Step 5: Solve for x
   x = 298,883.38/498.48
6. Step 6: Final answer
   x = 599.59