Finding the Fourth Proportional to 2,047.55, 3,073.07 and 815.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.55 : 3,073.07 = 815.82 : x
2. Step 2: Convert to fraction form
   2,047.55/3,073.07 = 815.82/x
3. Step 3: Cross multiply
   2,047.55x = 3,073.07 × 815.82
4. Step 4: Simplify right side
   2,047.55x = 2,507,067.89
5. Step 5: Solve for x
   x = 2,507,067.89/2,047.55
6. Step 6: Final answer
   x = 1,224.43