Finding the Fourth Proportional to 1,364.67, 1,882.71 and 839.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.67 : 1,882.71 = 839.79 : x
2. Step 2: Convert to fraction form
   1,364.67/1,882.71 = 839.79/x
3. Step 3: Cross multiply
   1,364.67x = 1,882.71 × 839.79
4. Step 4: Simplify right side
   1,364.67x = 1,581,081.03
5. Step 5: Solve for x
   x = 1,581,081.03/1,364.67
6. Step 6: Final answer
   x = 1,158.58