Finding the Fourth Proportional to 1,398.52, 1,930.62 and 875.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.52 : 1,930.62 = 875.32 : x
2. Step 2: Convert to fraction form
   1,398.52/1,930.62 = 875.32/x
3. Step 3: Cross multiply
   1,398.52x = 1,930.62 × 875.32
4. Step 4: Simplify right side
   1,398.52x = 1,689,910.30
5. Step 5: Solve for x
   x = 1,689,910.30/1,398.52
6. Step 6: Final answer
   x = 1,208.36