Finding the Fourth Proportional to 2,277.71, 3,142.55 and 1,392.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.71 : 3,142.55 = 1,392.59 : x
2. Step 2: Convert to fraction form
   2,277.71/3,142.55 = 1,392.59/x
3. Step 3: Cross multiply
   2,277.71x = 3,142.55 × 1,392.59
4. Step 4: Simplify right side
   2,277.71x = 4,376,261.03
5. Step 5: Solve for x
   x = 4,376,261.03/2,277.71
6. Step 6: Final answer
   x = 1,921.35