Finding the Fourth Proportional to 1,472.78, 2,032.46 and 809.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.78 : 2,032.46 = 809.69 : x
2. Step 2: Convert to fraction form
   1,472.78/2,032.46 = 809.69/x
3. Step 3: Cross multiply
   1,472.78x = 2,032.46 × 809.69
4. Step 4: Simplify right side
   1,472.78x = 1,645,654.40
5. Step 5: Solve for x
   x = 1,645,654.40/1,472.78
6. Step 6: Final answer
   x = 1,117.38