Finding the Fourth Proportional to 1,323.32, 1,984.86 and 445.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.32 : 1,984.86 = 445.82 : x
2. Step 2: Convert to fraction form
   1,323.32/1,984.86 = 445.82/x
3. Step 3: Cross multiply
   1,323.32x = 1,984.86 × 445.82
4. Step 4: Simplify right side
   1,323.32x = 884,890.29
5. Step 5: Solve for x
   x = 884,890.29/1,323.32
6. Step 6: Final answer
   x = 668.69