Finding the Fourth Proportional to 1,072.73, 1,608.89 and 524.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.73 : 1,608.89 = 524.57 : x
2. Step 2: Convert to fraction form
   1,072.73/1,608.89 = 524.57/x
3. Step 3: Cross multiply
   1,072.73x = 1,608.89 × 524.57
4. Step 4: Simplify right side
   1,072.73x = 843,964.76
5. Step 5: Solve for x
   x = 843,964.76/1,072.73
6. Step 6: Final answer
   x = 786.75