Finding the Fourth Proportional to 2,211.35, 3,051.71 and 1,216.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.35 : 3,051.71 = 1,216.69 : x
2. Step 2: Convert to fraction form
   2,211.35/3,051.71 = 1,216.69/x
3. Step 3: Cross multiply
   2,211.35x = 3,051.71 × 1,216.69
4. Step 4: Simplify right side
   2,211.35x = 3,712,985.04
5. Step 5: Solve for x
   x = 3,712,985.04/2,211.35
6. Step 6: Final answer
   x = 1,679.06