Finding the Fourth Proportional to 1,427.16, 1,969.56 and 985.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.16 : 1,969.56 = 985.26 : x
2. Step 2: Convert to fraction form
   1,427.16/1,969.56 = 985.26/x
3. Step 3: Cross multiply
   1,427.16x = 1,969.56 × 985.26
4. Step 4: Simplify right side
   1,427.16x = 1,940,528.69
5. Step 5: Solve for x
   x = 1,940,528.69/1,427.16
6. Step 6: Final answer
   x = 1,359.71