Finding the Fourth Proportional to 2,211.32, 3,051.69 and 1,216.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.32 : 3,051.69 = 1,216.58 : x
2. Step 2: Convert to fraction form
   2,211.32/3,051.69 = 1,216.58/x
3. Step 3: Cross multiply
   2,211.32x = 3,051.69 × 1,216.58
4. Step 4: Simplify right side
   2,211.32x = 3,712,625.02
5. Step 5: Solve for x
   x = 3,712,625.02/2,211.32
6. Step 6: Final answer
   x = 1,678.92