Finding the Fourth Proportional to 3,404.85, 4,698.71 and 1,912.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.85 : 4,698.71 = 1,912.83 : x
2. Step 2: Convert to fraction form
   3,404.85/4,698.71 = 1,912.83/x
3. Step 3: Cross multiply
   3,404.85x = 4,698.71 × 1,912.83
4. Step 4: Simplify right side
   3,404.85x = 8,987,833.45
5. Step 5: Solve for x
   x = 8,987,833.45/3,404.85
6. Step 6: Final answer
   x = 2,639.71