Finding the Fourth Proportional to 2,047.56, 3,071.55 and 814.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.56 : 3,071.55 = 814.80 : x
2. Step 2: Convert to fraction form
   2,047.56/3,071.55 = 814.80/x
3. Step 3: Cross multiply
   2,047.56x = 3,071.55 × 814.80
4. Step 4: Simplify right side
   2,047.56x = 2,502,698.94
5. Step 5: Solve for x
   x = 2,502,698.94/2,047.56
6. Step 6: Final answer
   x = 1,222.28