Finding the Fourth Proportional to 1,008.72, 1,501.61 and 1,003.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.72 : 1,501.61 = 1,003.23 : x
2. Step 2: Convert to fraction form
   1,008.72/1,501.61 = 1,003.23/x
3. Step 3: Cross multiply
   1,008.72x = 1,501.61 × 1,003.23
4. Step 4: Simplify right side
   1,008.72x = 1,506,455.18
5. Step 5: Solve for x
   x = 1,506,455.18/1,008.72
6. Step 6: Final answer
   x = 1,493.43