Finding the Fourth Proportional to 922.56, 1,271.52 and 726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   922.56 : 1,271.52 = 726.72 : x
2. Step 2: Convert to fraction form
   922.56/1,271.52 = 726.72/x
3. Step 3: Cross multiply
   922.56x = 1,271.52 × 726.72
4. Step 4: Simplify right side
   922.56x = 924,039.01
5. Step 5: Solve for x
   x = 924,039.01/922.56
6. Step 6: Final answer
   x = 1,001.60