Finding the Fourth Proportional to 1,265.05, 1,898.42 and 443.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.05 : 1,898.42 = 443.33 : x
2. Step 2: Convert to fraction form
   1,265.05/1,898.42 = 443.33/x
3. Step 3: Cross multiply
   1,265.05x = 1,898.42 × 443.33
4. Step 4: Simplify right side
   1,265.05x = 841,618.15
5. Step 5: Solve for x
   x = 841,618.15/1,265.05
6. Step 6: Final answer
   x = 665.29