Finding the Fourth Proportional to 1,554.62, 2,145.18 and 856.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.62 : 2,145.18 = 856.04 : x
2. Step 2: Convert to fraction form
   1,554.62/2,145.18 = 856.04/x
3. Step 3: Cross multiply
   1,554.62x = 2,145.18 × 856.04
4. Step 4: Simplify right side
   1,554.62x = 1,836,359.89
5. Step 5: Solve for x
   x = 1,836,359.89/1,554.62
6. Step 6: Final answer
   x = 1,181.23