Finding the Fourth Proportional to 2,048.58, 3,073.27 and 815.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.58 : 3,073.27 = 815.76 : x
2. Step 2: Convert to fraction form
   2,048.58/3,073.27 = 815.76/x
3. Step 3: Cross multiply
   2,048.58x = 3,073.27 × 815.76
4. Step 4: Simplify right side
   2,048.58x = 2,507,050.74
5. Step 5: Solve for x
   x = 2,507,050.74/2,048.58
6. Step 6: Final answer
   x = 1,223.80