Finding the Fourth Proportional to 1,265.06, 1,897.89 and 443.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.06 : 1,897.89 = 443.42 : x
2. Step 2: Convert to fraction form
   1,265.06/1,897.89 = 443.42/x
3. Step 3: Cross multiply
   1,265.06x = 1,897.89 × 443.42
4. Step 4: Simplify right side
   1,265.06x = 841,552.89
5. Step 5: Solve for x
   x = 841,552.89/1,265.06
6. Step 6: Final answer
   x = 665.23