Finding the Fourth Proportional to 1,401.16, 2,100.71 and 671.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.16 : 2,100.71 = 671.25 : x
2. Step 2: Convert to fraction form
   1,401.16/2,100.71 = 671.25/x
3. Step 3: Cross multiply
   1,401.16x = 2,100.71 × 671.25
4. Step 4: Simplify right side
   1,401.16x = 1,410,101.59
5. Step 5: Solve for x
   x = 1,410,101.59/1,401.16
6. Step 6: Final answer
   x = 1,006.38