Finding the Fourth Proportional to 498.17, 746.79 and 189.93

Step by Step Solution

1. Step 1: Write the proportion equation
   498.17 : 746.79 = 189.93 : x
2. Step 2: Convert to fraction form
   498.17/746.79 = 189.93/x
3. Step 3: Cross multiply
   498.17x = 746.79 × 189.93
4. Step 4: Simplify right side
   498.17x = 141,837.82
5. Step 5: Solve for x
   x = 141,837.82/498.17
6. Step 6: Final answer
   x = 284.72