Finding the Fourth Proportional to 2,579.97, 3,561.74 and 2,019.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.97 : 3,561.74 = 2,019.25 : x
2. Step 2: Convert to fraction form
   2,579.97/3,561.74 = 2,019.25/x
3. Step 3: Cross multiply
   2,579.97x = 3,561.74 × 2,019.25
4. Step 4: Simplify right side
   2,579.97x = 7,192,043.50
5. Step 5: Solve for x
   x = 7,192,043.50/2,579.97
6. Step 6: Final answer
   x = 2,787.65