Finding the Fourth Proportional to 2,039.32, 3,058.71 and 578.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.32 : 3,058.71 = 578.58 : x
2. Step 2: Convert to fraction form
   2,039.32/3,058.71 = 578.58/x
3. Step 3: Cross multiply
   2,039.32x = 3,058.71 × 578.58
4. Step 4: Simplify right side
   2,039.32x = 1,769,708.43
5. Step 5: Solve for x
   x = 1,769,708.43/2,039.32
6. Step 6: Final answer
   x = 867.79