Finding the Fourth Proportional to 3,944.52, 5,914.74 and 1,311.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,944.52 : 5,914.74 = 1,311.06 : x
2. Step 2: Convert to fraction form
   3,944.52/5,914.74 = 1,311.06/x
3. Step 3: Cross multiply
   3,944.52x = 5,914.74 × 1,311.06
4. Step 4: Simplify right side
   3,944.52x = 7,754,579.02
5. Step 5: Solve for x
   x = 7,754,579.02/3,944.52
6. Step 6: Final answer
   x = 1,965.91