Finding the Fourth Proportional to 2,276.32, 3,412.32 and 814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.32 : 3,412.32 = 814.72 : x
2. Step 2: Convert to fraction form
   2,276.32/3,412.32 = 814.72/x
3. Step 3: Cross multiply
   2,276.32x = 3,412.32 × 814.72
4. Step 4: Simplify right side
   2,276.32x = 2,780,085.35
5. Step 5: Solve for x
   x = 2,780,085.35/2,276.32
6. Step 6: Final answer
   x = 1,221.31