Finding the Fourth Proportional to 1,427.63, 1,969.41 and 923.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.63 : 1,969.41 = 923.30 : x
2. Step 2: Convert to fraction form
   1,427.63/1,969.41 = 923.30/x
3. Step 3: Cross multiply
   1,427.63x = 1,969.41 × 923.30
4. Step 4: Simplify right side
   1,427.63x = 1,818,357.25
5. Step 5: Solve for x
   x = 1,818,357.25/1,427.63
6. Step 6: Final answer
   x = 1,273.69