Finding the Fourth Proportional to 1,485.74, 2,049.71 and 856.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.74 : 2,049.71 = 856.17 : x
2. Step 2: Convert to fraction form
   1,485.74/2,049.71 = 856.17/x
3. Step 3: Cross multiply
   1,485.74x = 2,049.71 × 856.17
4. Step 4: Simplify right side
   1,485.74x = 1,754,895.93
5. Step 5: Solve for x
   x = 1,754,895.93/1,485.74
6. Step 6: Final answer
   x = 1,181.16