Finding the Fourth Proportional to 2,546.12, 3,819.42 and 814.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.12 : 3,819.42 = 814.28 : x
2. Step 2: Convert to fraction form
   2,546.12/3,819.42 = 814.28/x
3. Step 3: Cross multiply
   2,546.12x = 3,819.42 × 814.28
4. Step 4: Simplify right side
   2,546.12x = 3,110,077.32
5. Step 5: Solve for x
   x = 3,110,077.32/2,546.12
6. Step 6: Final answer
   x = 1,221.50