Finding the Fourth Proportional to 2,209.02, 3,311.56 and 1,429.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.02 : 3,311.56 = 1,429.62 : x
2. Step 2: Convert to fraction form
   2,209.02/3,311.56 = 1,429.62/x
3. Step 3: Cross multiply
   2,209.02x = 3,311.56 × 1,429.62
4. Step 4: Simplify right side
   2,209.02x = 4,734,272.41
5. Step 5: Solve for x
   x = 4,734,272.41/2,209.02
6. Step 6: Final answer
   x = 2,143.16