Finding the Fourth Proportional to 3,983.84, 5,498.04 and 2,215.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.84 : 5,498.04 = 2,215.56 : x
2. Step 2: Convert to fraction form
   3,983.84/5,498.04 = 2,215.56/x
3. Step 3: Cross multiply
   3,983.84x = 5,498.04 × 2,215.56
4. Step 4: Simplify right side
   3,983.84x = 12,181,237.50
5. Step 5: Solve for x
   x = 12,181,237.50/3,983.84
6. Step 6: Final answer
   x = 3,057.66