Finding the Fourth Proportional to 1,131.37, 1,696.69 and 361.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.37 : 1,696.69 = 361.69 : x
2. Step 2: Convert to fraction form
   1,131.37/1,696.69 = 361.69/x
3. Step 3: Cross multiply
   1,131.37x = 1,696.69 × 361.69
4. Step 4: Simplify right side
   1,131.37x = 613,672.02
5. Step 5: Solve for x
   x = 613,672.02/1,131.37
6. Step 6: Final answer
   x = 542.42