Finding the Fourth Proportional to 1,554.27, 2,144.73 and 855.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.27 : 2,144.73 = 855.63 : x
2. Step 2: Convert to fraction form
   1,554.27/2,144.73 = 855.63/x
3. Step 3: Cross multiply
   1,554.27x = 2,144.73 × 855.63
4. Step 4: Simplify right side
   1,554.27x = 1,835,095.33
5. Step 5: Solve for x
   x = 1,835,095.33/1,554.27
6. Step 6: Final answer
   x = 1,180.68