Finding the Fourth Proportional to 1,529.56, 2,110.72 and 857.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.56 : 2,110.72 = 857.42 : x
2. Step 2: Convert to fraction form
   1,529.56/2,110.72 = 857.42/x
3. Step 3: Cross multiply
   1,529.56x = 2,110.72 × 857.42
4. Step 4: Simplify right side
   1,529.56x = 1,809,773.54
5. Step 5: Solve for x
   x = 1,809,773.54/1,529.56
6. Step 6: Final answer
   x = 1,183.20