Finding the Fourth Proportional to 2,267.72, 3,401.64 and 1,171.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,267.72 : 3,401.64 = 1,171.40 : x
2. Step 2: Convert to fraction form
   2,267.72/3,401.64 = 1,171.40/x
3. Step 3: Cross multiply
   2,267.72x = 3,401.64 × 1,171.40
4. Step 4: Simplify right side
   2,267.72x = 3,984,681.10
5. Step 5: Solve for x
   x = 3,984,681.10/2,267.72
6. Step 6: Final answer
   x = 1,757.13