Finding the Fourth Proportional to 1,336.50, 1,845.51 and 839.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.50 : 1,845.51 = 839.97 : x
2. Step 2: Convert to fraction form
   1,336.50/1,845.51 = 839.97/x
3. Step 3: Cross multiply
   1,336.50x = 1,845.51 × 839.97
4. Step 4: Simplify right side
   1,336.50x = 1,550,173.03
5. Step 5: Solve for x
   x = 1,550,173.03/1,336.50
6. Step 6: Final answer
   x = 1,159.88