Finding the Fourth Proportional to 2,278.42, 3,144.24 and 1,283.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,278.42 : 3,144.24 = 1,283.69 : x
2. Step 2: Convert to fraction form
   2,278.42/3,144.24 = 1,283.69/x
3. Step 3: Cross multiply
   2,278.42x = 3,144.24 × 1,283.69
4. Step 4: Simplify right side
   2,278.42x = 4,036,237.31
5. Step 5: Solve for x
   x = 4,036,237.31/2,278.42
6. Step 6: Final answer
   x = 1,771.51