Finding the Fourth Proportional to 2,479.83, 3,421.30 and 1,485.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.83 : 3,421.30 = 1,485.43 : x
2. Step 2: Convert to fraction form
   2,479.83/3,421.30 = 1,485.43/x
3. Step 3: Cross multiply
   2,479.83x = 3,421.30 × 1,485.43
4. Step 4: Simplify right side
   2,479.83x = 5,082,101.66
5. Step 5: Solve for x
   x = 5,082,101.66/2,479.83
6. Step 6: Final answer
   x = 2,049.38