Finding the Fourth Proportional to 2,647, 3,970.50 and 1,108

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647 : 3,970.50 = 1,108 : x
2. Step 2: Convert to fraction form
   2,647/3,970.50 = 1,108/x
3. Step 3: Cross multiply
   2,647x = 3,970.50 × 1,108
4. Step 4: Simplify right side
   2,647x = 4,399,314
5. Step 5: Solve for x
   x = 4,399,314/2,647
6. Step 6: Final answer
   x = 1,662