Finding the Fourth Proportional to 2,824.76, 4,231.86 and 2,519.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,824.76 : 4,231.86 = 2,519.72 : x
2. Step 2: Convert to fraction form
   2,824.76/4,231.86 = 2,519.72/x
3. Step 3: Cross multiply
   2,824.76x = 4,231.86 × 2,519.72
4. Step 4: Simplify right side
   2,824.76x = 10,663,102.28
5. Step 5: Solve for x
   x = 10,663,102.28/2,824.76
6. Step 6: Final answer
   x = 3,774.87