Finding the Fourth Proportional to 1,323.83, 1,985.33 and 446.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.83 : 1,985.33 = 446.15 : x
2. Step 2: Convert to fraction form
   1,323.83/1,985.33 = 446.15/x
3. Step 3: Cross multiply
   1,323.83x = 1,985.33 × 446.15
4. Step 4: Simplify right side
   1,323.83x = 885,752.75
5. Step 5: Solve for x
   x = 885,752.75/1,323.83
6. Step 6: Final answer
   x = 669.08