Finding the Fourth Proportional to 2,648.85, 3,968.15 and 2,056.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.85 : 3,968.15 = 2,056.34 : x
2. Step 2: Convert to fraction form
   2,648.85/3,968.15 = 2,056.34/x
3. Step 3: Cross multiply
   2,648.85x = 3,968.15 × 2,056.34
4. Step 4: Simplify right side
   2,648.85x = 8,159,835.45
5. Step 5: Solve for x
   x = 8,159,835.45/2,648.85
6. Step 6: Final answer
   x = 3,080.52