Finding the Fourth Proportional to 825.82, 1,238.72 and 248.68

Step by Step Solution

1. Step 1: Write the proportion equation
   825.82 : 1,238.72 = 248.68 : x
2. Step 2: Convert to fraction form
   825.82/1,238.72 = 248.68/x
3. Step 3: Cross multiply
   825.82x = 1,238.72 × 248.68
4. Step 4: Simplify right side
   825.82x = 308,044.89
5. Step 5: Solve for x
   x = 308,044.89/825.82
6. Step 6: Final answer
   x = 373.02