Finding the Fourth Proportional to 1,427.76, 1,969.56 and 962.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.76 : 1,969.56 = 962.16 : x
2. Step 2: Convert to fraction form
   1,427.76/1,969.56 = 962.16/x
3. Step 3: Cross multiply
   1,427.76x = 1,969.56 × 962.16
4. Step 4: Simplify right side
   1,427.76x = 1,895,031.85
5. Step 5: Solve for x
   x = 1,895,031.85/1,427.76
6. Step 6: Final answer
   x = 1,327.28