Finding the Fourth Proportional to 1,320.38, 1,979.34 and 589.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.38 : 1,979.34 = 589.56 : x
2. Step 2: Convert to fraction form
   1,320.38/1,979.34 = 589.56/x
3. Step 3: Cross multiply
   1,320.38x = 1,979.34 × 589.56
4. Step 4: Simplify right side
   1,320.38x = 1,166,939.69
5. Step 5: Solve for x
   x = 1,166,939.69/1,320.38
6. Step 6: Final answer
   x = 883.79