Finding the Fourth Proportional to 1,123.73, 1,684.56 and 758.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.73 : 1,684.56 = 758.63 : x
2. Step 2: Convert to fraction form
   1,123.73/1,684.56 = 758.63/x
3. Step 3: Cross multiply
   1,123.73x = 1,684.56 × 758.63
4. Step 4: Simplify right side
   1,123.73x = 1,277,957.75
5. Step 5: Solve for x
   x = 1,277,957.75/1,123.73
6. Step 6: Final answer
   x = 1,137.25