Finding the Fourth Proportional to 2,211.69, 3,052.14 and 1,216.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.69 : 3,052.14 = 1,216.91 : x
2. Step 2: Convert to fraction form
   2,211.69/3,052.14 = 1,216.91/x
3. Step 3: Cross multiply
   2,211.69x = 3,052.14 × 1,216.91
4. Step 4: Simplify right side
   2,211.69x = 3,714,179.69
5. Step 5: Solve for x
   x = 3,714,179.69/2,211.69
6. Step 6: Final answer
   x = 1,679.34