Finding the Fourth Proportional to 3,165.31, 4,723.94 and 3,091.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,165.31 : 4,723.94 = 3,091.60 : x
2. Step 2: Convert to fraction form
   3,165.31/4,723.94 = 3,091.60/x
3. Step 3: Cross multiply
   3,165.31x = 4,723.94 × 3,091.60
4. Step 4: Simplify right side
   3,165.31x = 14,604,532.90
5. Step 5: Solve for x
   x = 14,604,532.90/3,165.31
6. Step 6: Final answer
   x = 4,613.93