Finding the Fourth Proportional to 2,111.37, 2,913.78 and 1,167.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.37 : 2,913.78 = 1,167.27 : x
2. Step 2: Convert to fraction form
   2,111.37/2,913.78 = 1,167.27/x
3. Step 3: Cross multiply
   2,111.37x = 2,913.78 × 1,167.27
4. Step 4: Simplify right side
   2,111.37x = 3,401,167.98
5. Step 5: Solve for x
   x = 3,401,167.98/2,111.37
6. Step 6: Final answer
   x = 1,610.88