Finding the Fourth Proportional to 2,748.30, 3,796.56 and 2,216.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.30 : 3,796.56 = 2,216.40 : x
2. Step 2: Convert to fraction form
   2,748.30/3,796.56 = 2,216.40/x
3. Step 3: Cross multiply
   2,748.30x = 3,796.56 × 2,216.40
4. Step 4: Simplify right side
   2,748.30x = 8,414,695.58
5. Step 5: Solve for x
   x = 8,414,695.58/2,748.30
6. Step 6: Final answer
   x = 3,061.78