Finding the Fourth Proportional to 2,277.78, 3,143.37 and 1,394.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.78 : 3,143.37 = 1,394.07 : x
2. Step 2: Convert to fraction form
   2,277.78/3,143.37 = 1,394.07/x
3. Step 3: Cross multiply
   2,277.78x = 3,143.37 × 1,394.07
4. Step 4: Simplify right side
   2,277.78x = 4,382,077.82
5. Step 5: Solve for x
   x = 4,382,077.82/2,277.78
6. Step 6: Final answer
   x = 1,923.84