Finding the Fourth Proportional to 3,328.27, 4,990.53 and 1,105.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,328.27 : 4,990.53 = 1,105.91 : x
2. Step 2: Convert to fraction form
   3,328.27/4,990.53 = 1,105.91/x
3. Step 3: Cross multiply
   3,328.27x = 4,990.53 × 1,105.91
4. Step 4: Simplify right side
   3,328.27x = 5,519,103.01
5. Step 5: Solve for x
   x = 5,519,103.01/3,328.27
6. Step 6: Final answer
   x = 1,658.25