Finding the Fourth Proportional to 1,123.72, 1,685.57 and 301.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.72 : 1,685.57 = 301.97 : x
2. Step 2: Convert to fraction form
   1,123.72/1,685.57 = 301.97/x
3. Step 3: Cross multiply
   1,123.72x = 1,685.57 × 301.97
4. Step 4: Simplify right side
   1,123.72x = 508,991.57
5. Step 5: Solve for x
   x = 508,991.57/1,123.72
6. Step 6: Final answer
   x = 452.95