Finding the Fourth Proportional to 2,288.84, 3,158.66 and 1,392.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.84 : 3,158.66 = 1,392.27 : x
2. Step 2: Convert to fraction form
   2,288.84/3,158.66 = 1,392.27/x
3. Step 3: Cross multiply
   2,288.84x = 3,158.66 × 1,392.27
4. Step 4: Simplify right side
   2,288.84x = 4,397,707.56
5. Step 5: Solve for x
   x = 4,397,707.56/2,288.84
6. Step 6: Final answer
   x = 1,921.37