Finding the Fourth Proportional to 1,455.32, 2,180.96 and 673.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,455.32 : 2,180.96 = 673.61 : x
2. Step 2: Convert to fraction form
   1,455.32/2,180.96 = 673.61/x
3. Step 3: Cross multiply
   1,455.32x = 2,180.96 × 673.61
4. Step 4: Simplify right side
   1,455.32x = 1,469,105.56
5. Step 5: Solve for x
   x = 1,469,105.56/1,455.32
6. Step 6: Final answer
   x = 1,009.47