Finding the Fourth Proportional to 2,626.12, 3,623.56 and 1,578.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.12 : 3,623.56 = 1,578.20 : x
2. Step 2: Convert to fraction form
   2,626.12/3,623.56 = 1,578.20/x
3. Step 3: Cross multiply
   2,626.12x = 3,623.56 × 1,578.20
4. Step 4: Simplify right side
   2,626.12x = 5,718,702.39
5. Step 5: Solve for x
   x = 5,718,702.39/2,626.12
6. Step 6: Final answer
   x = 2,177.62