Finding the Fourth Proportional to 498.69, 748.42 and 190.76

Step by Step Solution

1. Step 1: Write the proportion equation
   498.69 : 748.42 = 190.76 : x
2. Step 2: Convert to fraction form
   498.69/748.42 = 190.76/x
3. Step 3: Cross multiply
   498.69x = 748.42 × 190.76
4. Step 4: Simplify right side
   498.69x = 142,768.60
5. Step 5: Solve for x
   x = 142,768.60/498.69
6. Step 6: Final answer
   x = 286.29