Finding the Fourth Proportional to 1,441.96, 2,159.47 and 978.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.96 : 2,159.47 = 978.33 : x
2. Step 2: Convert to fraction form
   1,441.96/2,159.47 = 978.33/x
3. Step 3: Cross multiply
   1,441.96x = 2,159.47 × 978.33
4. Step 4: Simplify right side
   1,441.96x = 2,112,674.29
5. Step 5: Solve for x
   x = 2,112,674.29/1,441.96
6. Step 6: Final answer
   x = 1,465.14