Finding the Fourth Proportional to 2,087.98, 2,879.03 and 1,563.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.98 : 2,879.03 = 1,563.10 : x
2. Step 2: Convert to fraction form
   2,087.98/2,879.03 = 1,563.10/x
3. Step 3: Cross multiply
   2,087.98x = 2,879.03 × 1,563.10
4. Step 4: Simplify right side
   2,087.98x = 4,500,208.50
5. Step 5: Solve for x
   x = 4,500,208.50/2,087.98
6. Step 6: Final answer
   x = 2,155.30