Finding the Fourth Proportional to 3,171.86, 4,756.62 and 1,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.86 : 4,756.62 = 1,091.30 : x
2. Step 2: Convert to fraction form
   3,171.86/4,756.62 = 1,091.30/x
3. Step 3: Cross multiply
   3,171.86x = 4,756.62 × 1,091.30
4. Step 4: Simplify right side
   3,171.86x = 5,190,879.72
5. Step 5: Solve for x
   x = 5,190,879.72/3,171.86
6. Step 6: Final answer
   x = 1,636.54