Finding the Fourth Proportional to 3,111.91, 4,667.70 and 1,163.97

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.91 : 4,667.70 = 1,163.97 : x
2. Step 2: Convert to fraction form
   3,111.91/4,667.70 = 1,163.97/x
3. Step 3: Cross multiply
   3,111.91x = 4,667.70 × 1,163.97
4. Step 4: Simplify right side
   3,111.91x = 5,433,062.77
5. Step 5: Solve for x
   x = 5,433,062.77/3,111.91
6. Step 6: Final answer
   x = 1,745.89