Finding the Fourth Proportional to 2,210.73, 3,314.98 and 978.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.73 : 3,314.98 = 978.51 : x
2. Step 2: Convert to fraction form
   2,210.73/3,314.98 = 978.51/x
3. Step 3: Cross multiply
   2,210.73x = 3,314.98 × 978.51
4. Step 4: Simplify right side
   2,210.73x = 3,243,749.23
5. Step 5: Solve for x
   x = 3,243,749.23/2,210.73
6. Step 6: Final answer
   x = 1,467.28