Finding the Fourth Proportional to 2,276.72, 3,141.96 and 1,392.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.72 : 3,141.96 = 1,392.92 : x
2. Step 2: Convert to fraction form
   2,276.72/3,141.96 = 1,392.92/x
3. Step 3: Cross multiply
   2,276.72x = 3,141.96 × 1,392.92
4. Step 4: Simplify right side
   2,276.72x = 4,376,498.92
5. Step 5: Solve for x
   x = 4,376,498.92/2,276.72
6. Step 6: Final answer
   x = 1,922.28