Finding the Fourth Proportional to 1,002.49, 1,383.58 and 723.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.49 : 1,383.58 = 723.11 : x
2. Step 2: Convert to fraction form
   1,002.49/1,383.58 = 723.11/x
3. Step 3: Cross multiply
   1,002.49x = 1,383.58 × 723.11
4. Step 4: Simplify right side
   1,002.49x = 1,000,474.52
5. Step 5: Solve for x
   x = 1,000,474.52/1,002.49
6. Step 6: Final answer
   x = 997.99