Finding the Fourth Proportional to 2,275.96, 3,141.06 and 1,392.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.96 : 3,141.06 = 1,392.35 : x
2. Step 2: Convert to fraction form
   2,275.96/3,141.06 = 1,392.35/x
3. Step 3: Cross multiply
   2,275.96x = 3,141.06 × 1,392.35
4. Step 4: Simplify right side
   2,275.96x = 4,373,454.89
5. Step 5: Solve for x
   x = 4,373,454.89/2,275.96
6. Step 6: Final answer
   x = 1,921.59