Finding the Fourth Proportional to 3,185.91, 4,776.79 and 1,105.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.91 : 4,776.79 = 1,105.75 : x
2. Step 2: Convert to fraction form
   3,185.91/4,776.79 = 1,105.75/x
3. Step 3: Cross multiply
   3,185.91x = 4,776.79 × 1,105.75
4. Step 4: Simplify right side
   3,185.91x = 5,281,932.78
5. Step 5: Solve for x
   x = 5,281,932.78/3,185.91
6. Step 6: Final answer
   x = 1,657.91