Finding the Fourth Proportional to 2,210.82, 3,050.99 and 1,216.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.82 : 3,050.99 = 1,216.11 : x
2. Step 2: Convert to fraction form
   2,210.82/3,050.99 = 1,216.11/x
3. Step 3: Cross multiply
   2,210.82x = 3,050.99 × 1,216.11
4. Step 4: Simplify right side
   2,210.82x = 3,710,339.45
5. Step 5: Solve for x
   x = 3,710,339.45/2,210.82
6. Step 6: Final answer
   x = 1,678.26