Finding the Fourth Proportional to 3,899.34, 5,849.31 and 1,265.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.34 : 5,849.31 = 1,265.83 : x
2. Step 2: Convert to fraction form
   3,899.34/5,849.31 = 1,265.83/x
3. Step 3: Cross multiply
   3,899.34x = 5,849.31 × 1,265.83
4. Step 4: Simplify right side
   3,899.34x = 7,404,222.20
5. Step 5: Solve for x
   x = 7,404,222.20/3,899.34
6. Step 6: Final answer
   x = 1,898.84