Finding the Fourth Proportional to 1,123.73, 1,684.56 and 758.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.73 : 1,684.56 = 758.65 : x
2. Step 2: Convert to fraction form
   1,123.73/1,684.56 = 758.65/x
3. Step 3: Cross multiply
   1,123.73x = 1,684.56 × 758.65
4. Step 4: Simplify right side
   1,123.73x = 1,277,983.02
5. Step 5: Solve for x
   x = 1,277,983.02/1,123.73
6. Step 6: Final answer
   x = 1,137.27