Finding the Fourth Proportional to 2,269.11, 3,131.42 and 1,274.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.11 : 3,131.42 = 1,274.48 : x
2. Step 2: Convert to fraction form
   2,269.11/3,131.42 = 1,274.48/x
3. Step 3: Cross multiply
   2,269.11x = 3,131.42 × 1,274.48
4. Step 4: Simplify right side
   2,269.11x = 3,990,932.16
5. Step 5: Solve for x
   x = 3,990,932.16/2,269.11
6. Step 6: Final answer
   x = 1,758.81