Finding the Fourth Proportional to 3,834.86, 5,289.06 and 2,489

Step by Step Solution

1. Step 1: Write the proportion equation
   3,834.86 : 5,289.06 = 2,489 : x
2. Step 2: Convert to fraction form
   3,834.86/5,289.06 = 2,489/x
3. Step 3: Cross multiply
   3,834.86x = 5,289.06 × 2,489
4. Step 4: Simplify right side
   3,834.86x = 13,164,470.34
5. Step 5: Solve for x
   x = 13,164,470.34/3,834.86
6. Step 6: Final answer
   x = 3,432.84