Finding the Fourth Proportional to 1,203.48, 1,660.72 and 672.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,203.48 : 1,660.72 = 672.34 : x
2. Step 2: Convert to fraction form
   1,203.48/1,660.72 = 672.34/x
3. Step 3: Cross multiply
   1,203.48x = 1,660.72 × 672.34
4. Step 4: Simplify right side
   1,203.48x = 1,116,568.48
5. Step 5: Solve for x
   x = 1,116,568.48/1,203.48
6. Step 6: Final answer
   x = 927.78