Finding the Fourth Proportional to 1,399.25, 1,930.97 and 875.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.25 : 1,930.97 = 875.32 : x
2. Step 2: Convert to fraction form
   1,399.25/1,930.97 = 875.32/x
3. Step 3: Cross multiply
   1,399.25x = 1,930.97 × 875.32
4. Step 4: Simplify right side
   1,399.25x = 1,690,216.66
5. Step 5: Solve for x
   x = 1,690,216.66/1,399.25
6. Step 6: Final answer
   x = 1,207.94