Finding the Fourth Proportional to 1,049.42, 1,574.42 and 856.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.42 : 1,574.42 = 856.25 : x
2. Step 2: Convert to fraction form
   1,049.42/1,574.42 = 856.25/x
3. Step 3: Cross multiply
   1,049.42x = 1,574.42 × 856.25
4. Step 4: Simplify right side
   1,049.42x = 1,348,095.69
5. Step 5: Solve for x
   x = 1,348,095.69/1,049.42
6. Step 6: Final answer
   x = 1,284.61