Finding the Fourth Proportional to 2,002.21, 2,762.73 and 1,205.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.21 : 2,762.73 = 1,205.34 : x
2. Step 2: Convert to fraction form
   2,002.21/2,762.73 = 1,205.34/x
3. Step 3: Cross multiply
   2,002.21x = 2,762.73 × 1,205.34
4. Step 4: Simplify right side
   2,002.21x = 3,330,028.98
5. Step 5: Solve for x
   x = 3,330,028.98/2,002.21
6. Step 6: Final answer
   x = 1,663.18