Finding the Fourth Proportional to 498.52, 747.59 and 190.45

Step by Step Solution

1. Step 1: Write the proportion equation
   498.52 : 747.59 = 190.45 : x
2. Step 2: Convert to fraction form
   498.52/747.59 = 190.45/x
3. Step 3: Cross multiply
   498.52x = 747.59 × 190.45
4. Step 4: Simplify right side
   498.52x = 142,378.52
5. Step 5: Solve for x
   x = 142,378.52/498.52
6. Step 6: Final answer
   x = 285.60