Finding the Fourth Proportional to 1,399.26, 1,931.13 and 875.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.26 : 1,931.13 = 875.46 : x
2. Step 2: Convert to fraction form
   1,399.26/1,931.13 = 875.46/x
3. Step 3: Cross multiply
   1,399.26x = 1,931.13 × 875.46
4. Step 4: Simplify right side
   1,399.26x = 1,690,627.07
5. Step 5: Solve for x
   x = 1,690,627.07/1,399.26
6. Step 6: Final answer
   x = 1,208.23