Finding the Fourth Proportional to 2,105.40, 3,160.06 and 1,066.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.40 : 3,160.06 = 1,066.14 : x
2. Step 2: Convert to fraction form
   2,105.40/3,160.06 = 1,066.14/x
3. Step 3: Cross multiply
   2,105.40x = 3,160.06 × 1,066.14
4. Step 4: Simplify right side
   2,105.40x = 3,369,063.70
5. Step 5: Solve for x
   x = 3,369,063.70/2,105.40
6. Step 6: Final answer
   x = 1,600.20