Finding the Fourth Proportional to 2,081.63, 3,123.15 and 1,107.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.63 : 3,123.15 = 1,107.06 : x
2. Step 2: Convert to fraction form
   2,081.63/3,123.15 = 1,107.06/x
3. Step 3: Cross multiply
   2,081.63x = 3,123.15 × 1,107.06
4. Step 4: Simplify right side
   2,081.63x = 3,457,514.44
5. Step 5: Solve for x
   x = 3,457,514.44/2,081.63
6. Step 6: Final answer
   x = 1,660.96