Finding the Fourth Proportional to 2,081.76, 3,129.64 and 1,469.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.76 : 3,129.64 = 1,469.86 : x
2. Step 2: Convert to fraction form
   2,081.76/3,129.64 = 1,469.86/x
3. Step 3: Cross multiply
   2,081.76x = 3,129.64 × 1,469.86
4. Step 4: Simplify right side
   2,081.76x = 4,600,132.65
5. Step 5: Solve for x
   x = 4,600,132.65/2,081.76
6. Step 6: Final answer
   x = 2,209.73