Finding the Fourth Proportional to 1,554.60, 2,145.27 and 855.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.60 : 2,145.27 = 855.96 : x
2. Step 2: Convert to fraction form
   1,554.60/2,145.27 = 855.96/x
3. Step 3: Cross multiply
   1,554.60x = 2,145.27 × 855.96
4. Step 4: Simplify right side
   1,554.60x = 1,836,265.31
5. Step 5: Solve for x
   x = 1,836,265.31/1,554.60
6. Step 6: Final answer
   x = 1,181.18