Finding the Fourth Proportional to 2,730.06, 4,070.54 and 2,680.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.06 : 4,070.54 = 2,680.84 : x
2. Step 2: Convert to fraction form
   2,730.06/4,070.54 = 2,680.84/x
3. Step 3: Cross multiply
   2,730.06x = 4,070.54 × 2,680.84
4. Step 4: Simplify right side
   2,730.06x = 10,912,466.45
5. Step 5: Solve for x
   x = 10,912,466.45/2,730.06
6. Step 6: Final answer
   x = 3,997.15