Finding the Fourth Proportional to 3,789.91, 5,687.52 and 2,122.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.91 : 5,687.52 = 2,122.30 : x
2. Step 2: Convert to fraction form
   3,789.91/5,687.52 = 2,122.30/x
3. Step 3: Cross multiply
   3,789.91x = 5,687.52 × 2,122.30
4. Step 4: Simplify right side
   3,789.91x = 12,070,623.70
5. Step 5: Solve for x
   x = 12,070,623.70/3,789.91
6. Step 6: Final answer
   x = 3,184.94