Finding the Fourth Proportional to 1,391.49, 1,920.01 and 832.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.49 : 1,920.01 = 832.18 : x
2. Step 2: Convert to fraction form
   1,391.49/1,920.01 = 832.18/x
3. Step 3: Cross multiply
   1,391.49x = 1,920.01 × 832.18
4. Step 4: Simplify right side
   1,391.49x = 1,597,793.92
5. Step 5: Solve for x
   x = 1,597,793.92/1,391.49
6. Step 6: Final answer
   x = 1,148.26