Finding the Fourth Proportional to 2,392.57, 3,587.56 and 1,158.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.57 : 3,587.56 = 1,158.79 : x
2. Step 2: Convert to fraction form
   2,392.57/3,587.56 = 1,158.79/x
3. Step 3: Cross multiply
   2,392.57x = 3,587.56 × 1,158.79
4. Step 4: Simplify right side
   2,392.57x = 4,157,228.65
5. Step 5: Solve for x
   x = 4,157,228.65/2,392.57
6. Step 6: Final answer
   x = 1,737.56