Finding the Fourth Proportional to 2,269.23, 3,131.55 and 1,274.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.23 : 3,131.55 = 1,274.55 : x
2. Step 2: Convert to fraction form
   2,269.23/3,131.55 = 1,274.55/x
3. Step 3: Cross multiply
   2,269.23x = 3,131.55 × 1,274.55
4. Step 4: Simplify right side
   2,269.23x = 3,991,317.05
5. Step 5: Solve for x
   x = 3,991,317.05/2,269.23
6. Step 6: Final answer
   x = 1,758.89