Finding the Fourth Proportional to 1,265.29, 1,898.15 and 443.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.29 : 1,898.15 = 443.82 : x
2. Step 2: Convert to fraction form
   1,265.29/1,898.15 = 443.82/x
3. Step 3: Cross multiply
   1,265.29x = 1,898.15 × 443.82
4. Step 4: Simplify right side
   1,265.29x = 842,436.93
5. Step 5: Solve for x
   x = 842,436.93/1,265.29
6. Step 6: Final answer
   x = 665.81