Finding the Fourth Proportional to 2,269.40, 3,131.54 and 1,274.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.40 : 3,131.54 = 1,274.52 : x
2. Step 2: Convert to fraction form
   2,269.40/3,131.54 = 1,274.52/x
3. Step 3: Cross multiply
   2,269.40x = 3,131.54 × 1,274.52
4. Step 4: Simplify right side
   2,269.40x = 3,991,210.36
5. Step 5: Solve for x
   x = 3,991,210.36/2,269.40
6. Step 6: Final answer
   x = 1,758.71