Finding the Fourth Proportional to 2,269.49, 3,131.56 and 1,274.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.49 : 3,131.56 = 1,274.58 : x
2. Step 2: Convert to fraction form
   2,269.49/3,131.56 = 1,274.58/x
3. Step 3: Cross multiply
   2,269.49x = 3,131.56 × 1,274.58
4. Step 4: Simplify right side
   2,269.49x = 3,991,429.74
5. Step 5: Solve for x
   x = 3,991,429.74/2,269.49
6. Step 6: Final answer
   x = 1,758.73