Finding the Fourth Proportional to 2,210.91, 3,050.98 and 1,216.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.91 : 3,050.98 = 1,216.13 : x
2. Step 2: Convert to fraction form
   2,210.91/3,050.98 = 1,216.13/x
3. Step 3: Cross multiply
   2,210.91x = 3,050.98 × 1,216.13
4. Step 4: Simplify right side
   2,210.91x = 3,710,370.01
5. Step 5: Solve for x
   x = 3,710,370.01/2,210.91
6. Step 6: Final answer
   x = 1,678.21