Finding the Fourth Proportional to 1,336.45, 1,843.43 and 838.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.45 : 1,843.43 = 838.65 : x
2. Step 2: Convert to fraction form
   1,336.45/1,843.43 = 838.65/x
3. Step 3: Cross multiply
   1,336.45x = 1,843.43 × 838.65
4. Step 4: Simplify right side
   1,336.45x = 1,546,002.37
5. Step 5: Solve for x
   x = 1,546,002.37/1,336.45
6. Step 6: Final answer
   x = 1,156.80