Finding the Fourth Proportional to 2,268.99, 3,131.31 and 1,274.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.99 : 3,131.31 = 1,274.45 : x
2. Step 2: Convert to fraction form
   2,268.99/3,131.31 = 1,274.45/x
3. Step 3: Cross multiply
   2,268.99x = 3,131.31 × 1,274.45
4. Step 4: Simplify right side
   2,268.99x = 3,990,682.37
5. Step 5: Solve for x
   x = 3,990,682.37/2,268.99
6. Step 6: Final answer
   x = 1,758.79