Finding the Fourth Proportional to 1,550.63, 2,326.22 and 820.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.63 : 2,326.22 = 820.82 : x
2. Step 2: Convert to fraction form
   1,550.63/2,326.22 = 820.82/x
3. Step 3: Cross multiply
   1,550.63x = 2,326.22 × 820.82
4. Step 4: Simplify right side
   1,550.63x = 1,909,407.90
5. Step 5: Solve for x
   x = 1,909,407.90/1,550.63
6. Step 6: Final answer
   x = 1,231.38