Finding the Fourth Proportional to 1,003.29, 1,502.83 and 807.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.29 : 1,502.83 = 807.23 : x
2. Step 2: Convert to fraction form
   1,003.29/1,502.83 = 807.23/x
3. Step 3: Cross multiply
   1,003.29x = 1,502.83 × 807.23
4. Step 4: Simplify right side
   1,003.29x = 1,213,129.46
5. Step 5: Solve for x
   x = 1,213,129.46/1,003.29
6. Step 6: Final answer
   x = 1,209.15