Finding the Fourth Proportional to 2,105.66, 2,905.81 and 1,174.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.66 : 2,905.81 = 1,174.16 : x
2. Step 2: Convert to fraction form
   2,105.66/2,905.81 = 1,174.16/x
3. Step 3: Cross multiply
   2,105.66x = 2,905.81 × 1,174.16
4. Step 4: Simplify right side
   2,105.66x = 3,411,865.47
5. Step 5: Solve for x
   x = 3,411,865.47/2,105.66
6. Step 6: Final answer
   x = 1,620.33