Finding the Fourth Proportional to 1,550.84, 2,327.43 and 820.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.84 : 2,327.43 = 820.58 : x
2. Step 2: Convert to fraction form
   1,550.84/2,327.43 = 820.58/x
3. Step 3: Cross multiply
   1,550.84x = 2,327.43 × 820.58
4. Step 4: Simplify right side
   1,550.84x = 1,909,842.51
5. Step 5: Solve for x
   x = 1,909,842.51/1,550.84
6. Step 6: Final answer
   x = 1,231.49