Finding the Fourth Proportional to 1,401.73, 2,103.20 and 671.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.73 : 2,103.20 = 671.51 : x
2. Step 2: Convert to fraction form
   1,401.73/2,103.20 = 671.51/x
3. Step 3: Cross multiply
   1,401.73x = 2,103.20 × 671.51
4. Step 4: Simplify right side
   1,401.73x = 1,412,319.83
5. Step 5: Solve for x
   x = 1,412,319.83/1,401.73
6. Step 6: Final answer
   x = 1,007.55