Finding the Fourth Proportional to 2,203.86, 3,041.32 and 1,209.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,203.86 : 3,041.32 = 1,209.12 : x
2. Step 2: Convert to fraction form
   2,203.86/3,041.32 = 1,209.12/x
3. Step 3: Cross multiply
   2,203.86x = 3,041.32 × 1,209.12
4. Step 4: Simplify right side
   2,203.86x = 3,677,317.82
5. Step 5: Solve for x
   x = 3,677,317.82/2,203.86
6. Step 6: Final answer
   x = 1,668.58