Finding the Fourth Proportional to 2,095.72, 2,891.94 and 1,211.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.72 : 2,891.94 = 1,211.50 : x
2. Step 2: Convert to fraction form
   2,095.72/2,891.94 = 1,211.50/x
3. Step 3: Cross multiply
   2,095.72x = 2,891.94 × 1,211.50
4. Step 4: Simplify right side
   2,095.72x = 3,503,579.25
5. Step 5: Solve for x
   x = 3,503,579.25/2,095.72
6. Step 6: Final answer
   x = 1,671.78