Finding the Fourth Proportional to 978.69, 1,468.10 and 248.27

Step by Step Solution

1. Step 1: Write the proportion equation
   978.69 : 1,468.10 = 248.27 : x
2. Step 2: Convert to fraction form
   978.69/1,468.10 = 248.27/x
3. Step 3: Cross multiply
   978.69x = 1,468.10 × 248.27
4. Step 4: Simplify right side
   978.69x = 364,487.62
5. Step 5: Solve for x
   x = 364,487.62/978.69
6. Step 6: Final answer
   x = 372.42