Finding the Fourth Proportional to 3,191.69, 4,404.83 and 1,865.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,191.69 : 4,404.83 = 1,865.31 : x
2. Step 2: Convert to fraction form
   3,191.69/4,404.83 = 1,865.31/x
3. Step 3: Cross multiply
   3,191.69x = 4,404.83 × 1,865.31
4. Step 4: Simplify right side
   3,191.69x = 8,216,364.12
5. Step 5: Solve for x
   x = 8,216,364.12/3,191.69
6. Step 6: Final answer
   x = 2,574.30