Finding the Fourth Proportional to 2,063.78, 3,096.12 and 658.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,063.78 : 3,096.12 = 658.18 : x
2. Step 2: Convert to fraction form
   2,063.78/3,096.12 = 658.18/x
3. Step 3: Cross multiply
   2,063.78x = 3,096.12 × 658.18
4. Step 4: Simplify right side
   2,063.78x = 2,037,793.18
5. Step 5: Solve for x
   x = 2,037,793.18/2,063.78
6. Step 6: Final answer
   x = 987.41