Finding the Fourth Proportional to 1,011.52, 1,395.37 and 662.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.52 : 1,395.37 = 662.20 : x
2. Step 2: Convert to fraction form
   1,011.52/1,395.37 = 662.20/x
3. Step 3: Cross multiply
   1,011.52x = 1,395.37 × 662.20
4. Step 4: Simplify right side
   1,011.52x = 924,003.73
5. Step 5: Solve for x
   x = 924,003.73/1,011.52
6. Step 6: Final answer
   x = 913.48