Finding the Fourth Proportional to 1,002.85, 1,501.54 and 674.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.85 : 1,501.54 = 674.31 : x
2. Step 2: Convert to fraction form
   1,002.85/1,501.54 = 674.31/x
3. Step 3: Cross multiply
   1,002.85x = 1,501.54 × 674.31
4. Step 4: Simplify right side
   1,002.85x = 1,012,498.94
5. Step 5: Solve for x
   x = 1,012,498.94/1,002.85
6. Step 6: Final answer
   x = 1,009.62