Finding the Fourth Proportional to 2,722.89, 4,082.50 and 1,261.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.89 : 4,082.50 = 1,261.24 : x
2. Step 2: Convert to fraction form
   2,722.89/4,082.50 = 1,261.24/x
3. Step 3: Cross multiply
   2,722.89x = 4,082.50 × 1,261.24
4. Step 4: Simplify right side
   2,722.89x = 5,149,012.30
5. Step 5: Solve for x
   x = 5,149,012.30/2,722.89
6. Step 6: Final answer
   x = 1,891.01