Finding the Fourth Proportional to 1,398.56, 2,096.24 and 911.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.56 : 2,096.24 = 911.52 : x
2. Step 2: Convert to fraction form
   1,398.56/2,096.24 = 911.52/x
3. Step 3: Cross multiply
   1,398.56x = 2,096.24 × 911.52
4. Step 4: Simplify right side
   1,398.56x = 1,910,764.68
5. Step 5: Solve for x
   x = 1,910,764.68/1,398.56
6. Step 6: Final answer
   x = 1,366.24