Finding the Fourth Proportional to 498.38, 747.69 and 190.22

Step by Step Solution

1. Step 1: Write the proportion equation
   498.38 : 747.69 = 190.22 : x
2. Step 2: Convert to fraction form
   498.38/747.69 = 190.22/x
3. Step 3: Cross multiply
   498.38x = 747.69 × 190.22
4. Step 4: Simplify right side
   498.38x = 142,225.59
5. Step 5: Solve for x
   x = 142,225.59/498.38
6. Step 6: Final answer
   x = 285.38