Finding the Fourth Proportional to 1,123.23, 1,550.25 and 681.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.23 : 1,550.25 = 681.35 : x
2. Step 2: Convert to fraction form
   1,123.23/1,550.25 = 681.35/x
3. Step 3: Cross multiply
   1,123.23x = 1,550.25 × 681.35
4. Step 4: Simplify right side
   1,123.23x = 1,056,262.84
5. Step 5: Solve for x
   x = 1,056,262.84/1,123.23
6. Step 6: Final answer
   x = 940.38