Finding the Fourth Proportional to 1,382.23, 1,907.90 and 851.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.23 : 1,907.90 = 851.27 : x
2. Step 2: Convert to fraction form
   1,382.23/1,907.90 = 851.27/x
3. Step 3: Cross multiply
   1,382.23x = 1,907.90 × 851.27
4. Step 4: Simplify right side
   1,382.23x = 1,624,133.78
5. Step 5: Solve for x
   x = 1,624,133.78/1,382.23
6. Step 6: Final answer
   x = 1,175.01