Finding the Fourth Proportional to 2,277.96, 3,142.90 and 1,392.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.96 : 3,142.90 = 1,392.83 : x
2. Step 2: Convert to fraction form
   2,277.96/3,142.90 = 1,392.83/x
3. Step 3: Cross multiply
   2,277.96x = 3,142.90 × 1,392.83
4. Step 4: Simplify right side
   2,277.96x = 4,377,525.41
5. Step 5: Solve for x
   x = 4,377,525.41/2,277.96
6. Step 6: Final answer
   x = 1,921.69