Finding the Fourth Proportional to 1,211.96, 1,805.03 and 1,168.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211.96 : 1,805.03 = 1,168.91 : x
2. Step 2: Convert to fraction form
   1,211.96/1,805.03 = 1,168.91/x
3. Step 3: Cross multiply
   1,211.96x = 1,805.03 × 1,168.91
4. Step 4: Simplify right side
   1,211.96x = 2,109,915.40
5. Step 5: Solve for x
   x = 2,109,915.40/1,211.96
6. Step 6: Final answer
   x = 1,740.91