Finding the Fourth Proportional to 2,269.57, 3,131.61 and 1,274.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.57 : 3,131.61 = 1,274.89 : x
2. Step 2: Convert to fraction form
   2,269.57/3,131.61 = 1,274.89/x
3. Step 3: Cross multiply
   2,269.57x = 3,131.61 × 1,274.89
4. Step 4: Simplify right side
   2,269.57x = 3,992,458.27
5. Step 5: Solve for x
   x = 3,992,458.27/2,269.57
6. Step 6: Final answer
   x = 1,759.13