Finding the Fourth Proportional to 2,306.72, 3,473.77 and 2,078.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,306.72 : 3,473.77 = 2,078.30 : x
2. Step 2: Convert to fraction form
   2,306.72/3,473.77 = 2,078.30/x
3. Step 3: Cross multiply
   2,306.72x = 3,473.77 × 2,078.30
4. Step 4: Simplify right side
   2,306.72x = 7,219,525.80
5. Step 5: Solve for x
   x = 7,219,525.80/2,306.72
6. Step 6: Final answer
   x = 3,129.78