Finding the Fourth Proportional to 3,884.88, 5,826.24 and 1,288.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,884.88 : 5,826.24 = 1,288.02 : x
2. Step 2: Convert to fraction form
   3,884.88/5,826.24 = 1,288.02/x
3. Step 3: Cross multiply
   3,884.88x = 5,826.24 × 1,288.02
4. Step 4: Simplify right side
   3,884.88x = 7,504,313.64
5. Step 5: Solve for x
   x = 7,504,313.64/3,884.88
6. Step 6: Final answer
   x = 1,931.67