Finding the Fourth Proportional to 3,984.02, 5,498.30 and 2,215.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.02 : 5,498.30 = 2,215.98 : x
2. Step 2: Convert to fraction form
   3,984.02/5,498.30 = 2,215.98/x
3. Step 3: Cross multiply
   3,984.02x = 5,498.30 × 2,215.98
4. Step 4: Simplify right side
   3,984.02x = 12,184,122.83
5. Step 5: Solve for x
   x = 12,184,122.83/3,984.02
6. Step 6: Final answer
   x = 3,058.25