Finding the Fourth Proportional to 3,100.82, 4,274.91 and 2,215.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.82 : 4,274.91 = 2,215.08 : x
2. Step 2: Convert to fraction form
   3,100.82/4,274.91 = 2,215.08/x
3. Step 3: Cross multiply
   3,100.82x = 4,274.91 × 2,215.08
4. Step 4: Simplify right side
   3,100.82x = 9,469,267.64
5. Step 5: Solve for x
   x = 9,469,267.64/3,100.82
6. Step 6: Final answer
   x = 3,053.80