Finding the Fourth Proportional to 2,269.51, 3,131.81 and 1,274.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.51 : 3,131.81 = 1,274.83 : x
2. Step 2: Convert to fraction form
   2,269.51/3,131.81 = 1,274.83/x
3. Step 3: Cross multiply
   2,269.51x = 3,131.81 × 1,274.83
4. Step 4: Simplify right side
   2,269.51x = 3,992,511.14
5. Step 5: Solve for x
   x = 3,992,511.14/2,269.51
6. Step 6: Final answer
   x = 1,759.20