Finding the Fourth Proportional to 1,816.82, 2,726.58 and 843.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.82 : 2,726.58 = 843.60 : x
2. Step 2: Convert to fraction form
   1,816.82/2,726.58 = 843.60/x
3. Step 3: Cross multiply
   1,816.82x = 2,726.58 × 843.60
4. Step 4: Simplify right side
   1,816.82x = 2,300,142.89
5. Step 5: Solve for x
   x = 2,300,142.89/1,816.82
6. Step 6: Final answer
   x = 1,266.03