Finding the Fourth Proportional to 1,427.72, 1,971.22 and 896.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.72 : 1,971.22 = 896.82 : x
2. Step 2: Convert to fraction form
   1,427.72/1,971.22 = 896.82/x
3. Step 3: Cross multiply
   1,427.72x = 1,971.22 × 896.82
4. Step 4: Simplify right side
   1,427.72x = 1,767,829.52
5. Step 5: Solve for x
   x = 1,767,829.52/1,427.72
6. Step 6: Final answer
   x = 1,238.22