Finding the Fourth Proportional to 2,768.76, 3,819.78 and 2,547.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,768.76 : 3,819.78 = 2,547.72 : x
2. Step 2: Convert to fraction form
   2,768.76/3,819.78 = 2,547.72/x
3. Step 3: Cross multiply
   2,768.76x = 3,819.78 × 2,547.72
4. Step 4: Simplify right side
   2,768.76x = 9,731,729.90
5. Step 5: Solve for x
   x = 9,731,729.90/2,768.76
6. Step 6: Final answer
   x = 3,514.83