Finding the Fourth Proportional to 3,111.86, 4,667.63 and 1,163.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.86 : 4,667.63 = 1,163.91 : x
2. Step 2: Convert to fraction form
   3,111.86/4,667.63 = 1,163.91/x
3. Step 3: Cross multiply
   3,111.86x = 4,667.63 × 1,163.91
4. Step 4: Simplify right side
   3,111.86x = 5,432,695.41
5. Step 5: Solve for x
   x = 5,432,695.41/3,111.86
6. Step 6: Final answer
   x = 1,745.81