Finding the Fourth Proportional to 2,200.21, 3,036.23 and 1,205.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.21 : 3,036.23 = 1,205.45 : x
2. Step 2: Convert to fraction form
   2,200.21/3,036.23 = 1,205.45/x
3. Step 3: Cross multiply
   2,200.21x = 3,036.23 × 1,205.45
4. Step 4: Simplify right side
   2,200.21x = 3,660,017.43
5. Step 5: Solve for x
   x = 3,660,017.43/2,200.21
6. Step 6: Final answer
   x = 1,663.49