Finding the Fourth Proportional to 2,105.89, 2,905.84 and 1,266.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.89 : 2,905.84 = 1,266.59 : x
2. Step 2: Convert to fraction form
   2,105.89/2,905.84 = 1,266.59/x
3. Step 3: Cross multiply
   2,105.89x = 2,905.84 × 1,266.59
4. Step 4: Simplify right side
   2,105.89x = 3,680,516.73
5. Step 5: Solve for x
   x = 3,680,516.73/2,105.89
6. Step 6: Final answer
   x = 1,747.73