Finding the Fourth Proportional to 1,032.72, 1,424.52 and 771.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,032.72 : 1,424.52 = 771.36 : x
2. Step 2: Convert to fraction form
   1,032.72/1,424.52 = 771.36/x
3. Step 3: Cross multiply
   1,032.72x = 1,424.52 × 771.36
4. Step 4: Simplify right side
   1,032.72x = 1,098,817.75
5. Step 5: Solve for x
   x = 1,098,817.75/1,032.72
6. Step 6: Final answer
   x = 1,064.00