Finding the Fourth Proportional to 1,123.68, 1,685.38 and 302.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.68 : 1,685.38 = 302.02 : x
2. Step 2: Convert to fraction form
   1,123.68/1,685.38 = 302.02/x
3. Step 3: Cross multiply
   1,123.68x = 1,685.38 × 302.02
4. Step 4: Simplify right side
   1,123.68x = 509,018.47
5. Step 5: Solve for x
   x = 509,018.47/1,123.68
6. Step 6: Final answer
   x = 452.99