Finding the Fourth Proportional to 2,269.55, 3,131.82 and 1,274.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.55 : 3,131.82 = 1,274.81 : x
2. Step 2: Convert to fraction form
   2,269.55/3,131.82 = 1,274.81/x
3. Step 3: Cross multiply
   2,269.55x = 3,131.82 × 1,274.81
4. Step 4: Simplify right side
   2,269.55x = 3,992,459.80
5. Step 5: Solve for x
   x = 3,992,459.80/2,269.55
6. Step 6: Final answer
   x = 1,759.14