Finding the Fourth Proportional to 1,123.94, 1,683.46 and 926.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.94 : 1,683.46 = 926.73 : x
2. Step 2: Convert to fraction form
   1,123.94/1,683.46 = 926.73/x
3. Step 3: Cross multiply
   1,123.94x = 1,683.46 × 926.73
4. Step 4: Simplify right side
   1,123.94x = 1,560,099.83
5. Step 5: Solve for x
   x = 1,560,099.83/1,123.94
6. Step 6: Final answer
   x = 1,388.06