Finding the Fourth Proportional to 1,189.33, 1,783.83 and 367.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.33 : 1,783.83 = 367.63 : x
2. Step 2: Convert to fraction form
   1,189.33/1,783.83 = 367.63/x
3. Step 3: Cross multiply
   1,189.33x = 1,783.83 × 367.63
4. Step 4: Simplify right side
   1,189.33x = 655,789.42
5. Step 5: Solve for x
   x = 655,789.42/1,189.33
6. Step 6: Final answer
   x = 551.39