Finding the Fourth Proportional to 2,287.82, 3,157.27 and 1,293.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.82 : 3,157.27 = 1,293.20 : x
2. Step 2: Convert to fraction form
   2,287.82/3,157.27 = 1,293.20/x
3. Step 3: Cross multiply
   2,287.82x = 3,157.27 × 1,293.20
4. Step 4: Simplify right side
   2,287.82x = 4,082,981.56
5. Step 5: Solve for x
   x = 4,082,981.56/2,287.82
6. Step 6: Final answer
   x = 1,784.66