Finding the Fourth Proportional to 1,456.76, 2,184.93 and 1,211.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.76 : 2,184.93 = 1,211.56 : x
2. Step 2: Convert to fraction form
   1,456.76/2,184.93 = 1,211.56/x
3. Step 3: Cross multiply
   1,456.76x = 2,184.93 × 1,211.56
4. Step 4: Simplify right side
   1,456.76x = 2,647,168.33
5. Step 5: Solve for x
   x = 2,647,168.33/1,456.76
6. Step 6: Final answer
   x = 1,817.16