Finding the Fourth Proportional to 3,969.75, 5,477.76 and 2,200.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.75 : 5,477.76 = 2,200.89 : x
2. Step 2: Convert to fraction form
   3,969.75/5,477.76 = 2,200.89/x
3. Step 3: Cross multiply
   3,969.75x = 5,477.76 × 2,200.89
4. Step 4: Simplify right side
   3,969.75x = 12,055,947.21
5. Step 5: Solve for x
   x = 12,055,947.21/3,969.75
6. Step 6: Final answer
   x = 3,036.95