Finding the Fourth Proportional to 1,308.54, 1,805.42 and 843.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.54 : 1,805.42 = 843.06 : x
2. Step 2: Convert to fraction form
   1,308.54/1,805.42 = 843.06/x
3. Step 3: Cross multiply
   1,308.54x = 1,805.42 × 843.06
4. Step 4: Simplify right side
   1,308.54x = 1,522,077.39
5. Step 5: Solve for x
   x = 1,522,077.39/1,308.54
6. Step 6: Final answer
   x = 1,163.19