Finding the Fourth Proportional to 2,105.14, 3,160.61 and 1,181.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.14 : 3,160.61 = 1,181.28 : x
2. Step 2: Convert to fraction form
   2,105.14/3,160.61 = 1,181.28/x
3. Step 3: Cross multiply
   2,105.14x = 3,160.61 × 1,181.28
4. Step 4: Simplify right side
   2,105.14x = 3,733,565.38
5. Step 5: Solve for x
   x = 3,733,565.38/2,105.14
6. Step 6: Final answer
   x = 1,773.55