Finding the Fourth Proportional to 2,648.58, 3,970.71 and 1,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.58 : 3,970.71 = 1,108.50 : x
2. Step 2: Convert to fraction form
   2,648.58/3,970.71 = 1,108.50/x
3. Step 3: Cross multiply
   2,648.58x = 3,970.71 × 1,108.50
4. Step 4: Simplify right side
   2,648.58x = 4,401,532.04
5. Step 5: Solve for x
   x = 4,401,532.04/2,648.58
6. Step 6: Final answer
   x = 1,661.85