Finding the Fourth Proportional to 1,096.76, 1,644.32 and 707.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.76 : 1,644.32 = 707.20 : x
2. Step 2: Convert to fraction form
   1,096.76/1,644.32 = 707.20/x
3. Step 3: Cross multiply
   1,096.76x = 1,644.32 × 707.20
4. Step 4: Simplify right side
   1,096.76x = 1,162,863.10
5. Step 5: Solve for x
   x = 1,162,863.10/1,096.76
6. Step 6: Final answer
   x = 1,060.27