Finding the Fourth Proportional to 2,308.21, 3,461.82 and 664.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.21 : 3,461.82 = 664.45 : x
2. Step 2: Convert to fraction form
   2,308.21/3,461.82 = 664.45/x
3. Step 3: Cross multiply
   2,308.21x = 3,461.82 × 664.45
4. Step 4: Simplify right side
   2,308.21x = 2,300,206.30
5. Step 5: Solve for x
   x = 2,300,206.30/2,308.21
6. Step 6: Final answer
   x = 996.53