Finding the Fourth Proportional to 3,081.08, 4,619.60 and 1,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.08 : 4,619.60 = 1,105.72 : x
2. Step 2: Convert to fraction form
   3,081.08/4,619.60 = 1,105.72/x
3. Step 3: Cross multiply
   3,081.08x = 4,619.60 × 1,105.72
4. Step 4: Simplify right side
   3,081.08x = 5,107,992.65
5. Step 5: Solve for x
   x = 5,107,992.65/3,081.08
6. Step 6: Final answer
   x = 1,657.86