Finding the Fourth Proportional to 1,336.82, 1,845.05 and 839.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.82 : 1,845.05 = 839.07 : x
2. Step 2: Convert to fraction form
   1,336.82/1,845.05 = 839.07/x
3. Step 3: Cross multiply
   1,336.82x = 1,845.05 × 839.07
4. Step 4: Simplify right side
   1,336.82x = 1,548,121.91
5. Step 5: Solve for x
   x = 1,548,121.91/1,336.82
6. Step 6: Final answer
   x = 1,158.07