Finding the Fourth Proportional to 2,277.89, 3,143.61 and 1,393.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.89 : 3,143.61 = 1,393.88 : x
2. Step 2: Convert to fraction form
   2,277.89/3,143.61 = 1,393.88/x
3. Step 3: Cross multiply
   2,277.89x = 3,143.61 × 1,393.88
4. Step 4: Simplify right side
   2,277.89x = 4,381,822.97
5. Step 5: Solve for x
   x = 4,381,822.97/2,277.89
6. Step 6: Final answer
   x = 1,923.64