Finding the Fourth Proportional to 2,549.82, 3,518.88 and 1,919.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.82 : 3,518.88 = 1,919.20 : x
2. Step 2: Convert to fraction form
   2,549.82/3,518.88 = 1,919.20/x
3. Step 3: Cross multiply
   2,549.82x = 3,518.88 × 1,919.20
4. Step 4: Simplify right side
   2,549.82x = 6,753,434.50
5. Step 5: Solve for x
   x = 6,753,434.50/2,549.82
6. Step 6: Final answer
   x = 2,648.59