Finding the Fourth Proportional to 1,002.30, 1,502.67 and 673.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.30 : 1,502.67 = 673.59 : x
2. Step 2: Convert to fraction form
   1,002.30/1,502.67 = 673.59/x
3. Step 3: Cross multiply
   1,002.30x = 1,502.67 × 673.59
4. Step 4: Simplify right side
   1,002.30x = 1,012,183.49
5. Step 5: Solve for x
   x = 1,012,183.49/1,002.30
6. Step 6: Final answer
   x = 1,009.86