Finding the Fourth Proportional to 1,002.09, 1,382.79 and 603.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.09 : 1,382.79 = 603.69 : x
2. Step 2: Convert to fraction form
   1,002.09/1,382.79 = 603.69/x
3. Step 3: Cross multiply
   1,002.09x = 1,382.79 × 603.69
4. Step 4: Simplify right side
   1,002.09x = 834,776.50
5. Step 5: Solve for x
   x = 834,776.50/1,002.09
6. Step 6: Final answer
   x = 833.04