Finding the Fourth Proportional to 2,203.89, 3,041.37 and 1,209.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,203.89 : 3,041.37 = 1,209.21 : x
2. Step 2: Convert to fraction form
   2,203.89/3,041.37 = 1,209.21/x
3. Step 3: Cross multiply
   2,203.89x = 3,041.37 × 1,209.21
4. Step 4: Simplify right side
   2,203.89x = 3,677,655.02
5. Step 5: Solve for x
   x = 3,677,655.02/2,203.89
6. Step 6: Final answer
   x = 1,668.71