Finding the Fourth Proportional to 2,095.40, 2,890.20 and 1,211.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.40 : 2,890.20 = 1,211.06 : x
2. Step 2: Convert to fraction form
   2,095.40/2,890.20 = 1,211.06/x
3. Step 3: Cross multiply
   2,095.40x = 2,890.20 × 1,211.06
4. Step 4: Simplify right side
   2,095.40x = 3,500,205.61
5. Step 5: Solve for x
   x = 3,500,205.61/2,095.40
6. Step 6: Final answer
   x = 1,670.42