Finding the Fourth Proportional to 2,106.42, 2,906.71 and 1,266.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.42 : 2,906.71 = 1,266.96 : x
2. Step 2: Convert to fraction form
   2,106.42/2,906.71 = 1,266.96/x
3. Step 3: Cross multiply
   2,106.42x = 2,906.71 × 1,266.96
4. Step 4: Simplify right side
   2,106.42x = 3,682,685.30
5. Step 5: Solve for x
   x = 3,682,685.30/2,106.42
6. Step 6: Final answer
   x = 1,748.31