Finding the Fourth Proportional to 1,550.72, 2,323.31 and 818.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.72 : 2,323.31 = 818.66 : x
2. Step 2: Convert to fraction form
   1,550.72/2,323.31 = 818.66/x
3. Step 3: Cross multiply
   1,550.72x = 2,323.31 × 818.66
4. Step 4: Simplify right side
   1,550.72x = 1,901,985.25
5. Step 5: Solve for x
   x = 1,901,985.25/1,550.72
6. Step 6: Final answer
   x = 1,226.52