Finding the Fourth Proportional to 3,939.34, 5,907.52 and 1,306.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939.34 : 5,907.52 = 1,306.06 : x
2. Step 2: Convert to fraction form
   3,939.34/5,907.52 = 1,306.06/x
3. Step 3: Cross multiply
   3,939.34x = 5,907.52 × 1,306.06
4. Step 4: Simplify right side
   3,939.34x = 7,715,575.57
5. Step 5: Solve for x
   x = 7,715,575.57/3,939.34
6. Step 6: Final answer
   x = 1,958.60