Finding the Fourth Proportional to 2,123.17, 3,183.30 and 1,081.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.17 : 3,183.30 = 1,081.16 : x
2. Step 2: Convert to fraction form
   2,123.17/3,183.30 = 1,081.16/x
3. Step 3: Cross multiply
   2,123.17x = 3,183.30 × 1,081.16
4. Step 4: Simplify right side
   2,123.17x = 3,441,642.06
5. Step 5: Solve for x
   x = 3,441,642.06/2,123.17
6. Step 6: Final answer
   x = 1,620.99