Finding the Fourth Proportional to 253.82, 380.71 and 82.82

Step by Step Solution

1. Step 1: Write the proportion equation
   253.82 : 380.71 = 82.82 : x
2. Step 2: Convert to fraction form
   253.82/380.71 = 82.82/x
3. Step 3: Cross multiply
   253.82x = 380.71 × 82.82
4. Step 4: Simplify right side
   253.82x = 31,530.40
5. Step 5: Solve for x
   x = 31,530.40/253.82
6. Step 6: Final answer
   x = 124.22