Finding the Fourth Proportional to 3,978.37, 5,490.41 and 2,210.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.37 : 5,490.41 = 2,210.00 : x
2. Step 2: Convert to fraction form
   3,978.37/5,490.41 = 2,210.00/x
3. Step 3: Cross multiply
   3,978.37x = 5,490.41 × 2,210.00
4. Step 4: Simplify right side
   3,978.37x = 12,133,767.60
5. Step 5: Solve for x
   x = 12,133,767.60/3,978.37
6. Step 6: Final answer
   x = 3,049.93