Finding the Fourth Proportional to 3,944.52, 5,915.34 and 1,311.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,944.52 : 5,915.34 = 1,311.54 : x
2. Step 2: Convert to fraction form
   3,944.52/5,915.34 = 1,311.54/x
3. Step 3: Cross multiply
   3,944.52x = 5,915.34 × 1,311.54
4. Step 4: Simplify right side
   3,944.52x = 7,758,205.02
5. Step 5: Solve for x
   x = 7,758,205.02/3,944.52
6. Step 6: Final answer
   x = 1,966.83