Finding the Fourth Proportional to 2,210.46, 3,313.53 and 978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.46 : 3,313.53 = 978.18 : x
2. Step 2: Convert to fraction form
   2,210.46/3,313.53 = 978.18/x
3. Step 3: Cross multiply
   2,210.46x = 3,313.53 × 978.18
4. Step 4: Simplify right side
   2,210.46x = 3,241,228.78
5. Step 5: Solve for x
   x = 3,241,228.78/2,210.46
6. Step 6: Final answer
   x = 1,466.31