Finding the Fourth Proportional to 1,003.20, 1,504.83 and 475.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.20 : 1,504.83 = 475.99 : x
2. Step 2: Convert to fraction form
   1,003.20/1,504.83 = 475.99/x
3. Step 3: Cross multiply
   1,003.20x = 1,504.83 × 475.99
4. Step 4: Simplify right side
   1,003.20x = 716,284.03
5. Step 5: Solve for x
   x = 716,284.03/1,003.20
6. Step 6: Final answer
   x = 714.00