Finding the Fourth Proportional to 1,398.32, 1,930.71 and 901.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.32 : 1,930.71 = 901.25 : x
2. Step 2: Convert to fraction form
   1,398.32/1,930.71 = 901.25/x
3. Step 3: Cross multiply
   1,398.32x = 1,930.71 × 901.25
4. Step 4: Simplify right side
   1,398.32x = 1,740,052.39
5. Step 5: Solve for x
   x = 1,740,052.39/1,398.32
6. Step 6: Final answer
   x = 1,244.39