Finding the Fourth Proportional to 1,323.17, 1,825.15 and 851.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.17 : 1,825.15 = 851.69 : x
2. Step 2: Convert to fraction form
   1,323.17/1,825.15 = 851.69/x
3. Step 3: Cross multiply
   1,323.17x = 1,825.15 × 851.69
4. Step 4: Simplify right side
   1,323.17x = 1,554,448.62
5. Step 5: Solve for x
   x = 1,554,448.62/1,323.17
6. Step 6: Final answer
   x = 1,174.79