Finding the Fourth Proportional to 2,039.16, 3,058.38 and 578.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.16 : 3,058.38 = 578.03 : x
2. Step 2: Convert to fraction form
   2,039.16/3,058.38 = 578.03/x
3. Step 3: Cross multiply
   2,039.16x = 3,058.38 × 578.03
4. Step 4: Simplify right side
   2,039.16x = 1,767,820.10
5. Step 5: Solve for x
   x = 1,767,820.10/2,039.16
6. Step 6: Final answer
   x = 866.94