Finding the Fourth Proportional to 1,554.25, 2,144.86 and 855.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.25 : 2,144.86 = 855.62 : x
2. Step 2: Convert to fraction form
   1,554.25/2,144.86 = 855.62/x
3. Step 3: Cross multiply
   1,554.25x = 2,144.86 × 855.62
4. Step 4: Simplify right side
   1,554.25x = 1,835,191.54
5. Step 5: Solve for x
   x = 1,835,191.54/1,554.25
6. Step 6: Final answer
   x = 1,180.76