Finding the Fourth Proportional to 1,211.41, 1,671.98 and 714.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211.41 : 1,671.98 = 714.03 : x
2. Step 2: Convert to fraction form
   1,211.41/1,671.98 = 714.03/x
3. Step 3: Cross multiply
   1,211.41x = 1,671.98 × 714.03
4. Step 4: Simplify right side
   1,211.41x = 1,193,843.88
5. Step 5: Solve for x
   x = 1,193,843.88/1,211.41
6. Step 6: Final answer
   x = 985.50