Finding the Fourth Proportional to 2,269.43, 3,131.79 and 1,274.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.43 : 3,131.79 = 1,274.69 : x
2. Step 2: Convert to fraction form
   2,269.43/3,131.79 = 1,274.69/x
3. Step 3: Cross multiply
   2,269.43x = 3,131.79 × 1,274.69
4. Step 4: Simplify right side
   2,269.43x = 3,992,061.40
5. Step 5: Solve for x
   x = 3,992,061.40/2,269.43
6. Step 6: Final answer
   x = 1,759.06