Finding the Fourth Proportional to 2,211.39, 3,051.72 and 1,216.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.39 : 3,051.72 = 1,216.67 : x
2. Step 2: Convert to fraction form
   2,211.39/3,051.72 = 1,216.67/x
3. Step 3: Cross multiply
   2,211.39x = 3,051.72 × 1,216.67
4. Step 4: Simplify right side
   2,211.39x = 3,712,920.91
5. Step 5: Solve for x
   x = 3,712,920.91/2,211.39
6. Step 6: Final answer
   x = 1,679.00