Finding the Fourth Proportional to 978.48, 1,467.86 and 363.05

Step by Step Solution

1. Step 1: Write the proportion equation
   978.48 : 1,467.86 = 363.05 : x
2. Step 2: Convert to fraction form
   978.48/1,467.86 = 363.05/x
3. Step 3: Cross multiply
   978.48x = 1,467.86 × 363.05
4. Step 4: Simplify right side
   978.48x = 532,906.57
5. Step 5: Solve for x
   x = 532,906.57/978.48
6. Step 6: Final answer
   x = 544.63