Finding the Fourth Proportional to 3,081.17, 4,622.55 and 1,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.17 : 4,622.55 = 1,106.72 : x
2. Step 2: Convert to fraction form
   3,081.17/4,622.55 = 1,106.72/x
3. Step 3: Cross multiply
   3,081.17x = 4,622.55 × 1,106.72
4. Step 4: Simplify right side
   3,081.17x = 5,115,868.54
5. Step 5: Solve for x
   x = 5,115,868.54/3,081.17
6. Step 6: Final answer
   x = 1,660.37