Finding the Fourth Proportional to 2,269.10, 3,131.30 and 1,274.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.10 : 3,131.30 = 1,274.62 : x
2. Step 2: Convert to fraction form
   2,269.10/3,131.30 = 1,274.62/x
3. Step 3: Cross multiply
   2,269.10x = 3,131.30 × 1,274.62
4. Step 4: Simplify right side
   2,269.10x = 3,991,217.61
5. Step 5: Solve for x
   x = 3,991,217.61/2,269.10
6. Step 6: Final answer
   x = 1,758.94