Finding the Fourth Proportional to 1,282.72, 1,923.67 and 551.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282.72 : 1,923.67 = 551.83 : x
2. Step 2: Convert to fraction form
   1,282.72/1,923.67 = 551.83/x
3. Step 3: Cross multiply
   1,282.72x = 1,923.67 × 551.83
4. Step 4: Simplify right side
   1,282.72x = 1,061,538.82
5. Step 5: Solve for x
   x = 1,061,538.82/1,282.72
6. Step 6: Final answer
   x = 827.57