Finding the Fourth Proportional to 2,081.60, 3,124 and 1,108

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.60 : 3,124 = 1,108 : x
2. Step 2: Convert to fraction form
   2,081.60/3,124 = 1,108/x
3. Step 3: Cross multiply
   2,081.60x = 3,124 × 1,108
4. Step 4: Simplify right side
   2,081.60x = 3,461,392
5. Step 5: Solve for x
   x = 3,461,392/2,081.60
6. Step 6: Final answer
   x = 1,662.85