Finding the Fourth Proportional to 2,210.30, 3,314.37 and 1,286.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.30 : 3,314.37 = 1,286.18 : x
2. Step 2: Convert to fraction form
   2,210.30/3,314.37 = 1,286.18/x
3. Step 3: Cross multiply
   2,210.30x = 3,314.37 × 1,286.18
4. Step 4: Simplify right side
   2,210.30x = 4,262,876.41
5. Step 5: Solve for x
   x = 4,262,876.41/2,210.30
6. Step 6: Final answer
   x = 1,928.64