Finding the Fourth Proportional to 1,472.27, 2,030.89 and 919.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.27 : 2,030.89 = 919.31 : x
2. Step 2: Convert to fraction form
   1,472.27/2,030.89 = 919.31/x
3. Step 3: Cross multiply
   1,472.27x = 2,030.89 × 919.31
4. Step 4: Simplify right side
   1,472.27x = 1,867,022.56
5. Step 5: Solve for x
   x = 1,867,022.56/1,472.27
6. Step 6: Final answer
   x = 1,268.12