Finding the Fourth Proportional to 1,401.34, 2,098.81 and 671.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.34 : 2,098.81 = 671.43 : x
2. Step 2: Convert to fraction form
   1,401.34/2,098.81 = 671.43/x
3. Step 3: Cross multiply
   1,401.34x = 2,098.81 × 671.43
4. Step 4: Simplify right side
   1,401.34x = 1,409,204.00
5. Step 5: Solve for x
   x = 1,409,204.00/1,401.34
6. Step 6: Final answer
   x = 1,005.61