Finding the Fourth Proportional to 3,665.07, 5,490.28 and 2,203.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.07 : 5,490.28 = 2,203.42 : x
2. Step 2: Convert to fraction form
   3,665.07/5,490.28 = 2,203.42/x
3. Step 3: Cross multiply
   3,665.07x = 5,490.28 × 2,203.42
4. Step 4: Simplify right side
   3,665.07x = 12,097,392.76
5. Step 5: Solve for x
   x = 12,097,392.76/3,665.07
6. Step 6: Final answer
   x = 3,300.73