Finding the Fourth Proportional to 2,016.72, 3,026.40 and 862.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.72 : 3,026.40 = 862.56 : x
2. Step 2: Convert to fraction form
   2,016.72/3,026.40 = 862.56/x
3. Step 3: Cross multiply
   2,016.72x = 3,026.40 × 862.56
4. Step 4: Simplify right side
   2,016.72x = 2,610,451.58
5. Step 5: Solve for x
   x = 2,610,451.58/2,016.72
6. Step 6: Final answer
   x = 1,294.40