Finding the Fourth Proportional to 2,105.66, 2,905.57 and 1,266.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.66 : 2,905.57 = 1,266.37 : x
2. Step 2: Convert to fraction form
   2,105.66/2,905.57 = 1,266.37/x
3. Step 3: Cross multiply
   2,105.66x = 2,905.57 × 1,266.37
4. Step 4: Simplify right side
   2,105.66x = 3,679,526.68
5. Step 5: Solve for x
   x = 3,679,526.68/2,105.66
6. Step 6: Final answer
   x = 1,747.45