Finding the Fourth Proportional to 1,965.79, 2,947.71 and 1,144.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.79 : 2,947.71 = 1,144.27 : x
2. Step 2: Convert to fraction form
   1,965.79/2,947.71 = 1,144.27/x
3. Step 3: Cross multiply
   1,965.79x = 2,947.71 × 1,144.27
4. Step 4: Simplify right side
   1,965.79x = 3,372,976.12
5. Step 5: Solve for x
   x = 3,372,976.12/1,965.79
6. Step 6: Final answer
   x = 1,715.84