Finding the Fourth Proportional to 1,401.93, 2,103.35 and 671.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.93 : 2,103.35 = 671.56 : x
2. Step 2: Convert to fraction form
   1,401.93/2,103.35 = 671.56/x
3. Step 3: Cross multiply
   1,401.93x = 2,103.35 × 671.56
4. Step 4: Simplify right side
   1,401.93x = 1,412,517.11
5. Step 5: Solve for x
   x = 1,412,517.11/1,401.93
6. Step 6: Final answer
   x = 1,007.55