Finding the Fourth Proportional to 2,210.91, 3,050.97 and 1,216.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.91 : 3,050.97 = 1,216.17 : x
2. Step 2: Convert to fraction form
   2,210.91/3,050.97 = 1,216.17/x
3. Step 3: Cross multiply
   2,210.91x = 3,050.97 × 1,216.17
4. Step 4: Simplify right side
   2,210.91x = 3,710,498.18
5. Step 5: Solve for x
   x = 3,710,498.18/2,210.91
6. Step 6: Final answer
   x = 1,678.27