Finding the Fourth Proportional to 2,106.34, 2,905.86 and 1,267.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.34 : 2,905.86 = 1,267.05 : x
2. Step 2: Convert to fraction form
   2,106.34/2,905.86 = 1,267.05/x
3. Step 3: Cross multiply
   2,106.34x = 2,905.86 × 1,267.05
4. Step 4: Simplify right side
   2,106.34x = 3,681,869.91
5. Step 5: Solve for x
   x = 3,681,869.91/2,106.34
6. Step 6: Final answer
   x = 1,747.99