Finding the Fourth Proportional to 2,319.69, 3,478.73 and 1,440.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,319.69 : 3,478.73 = 1,440.84 : x
2. Step 2: Convert to fraction form
   2,319.69/3,478.73 = 1,440.84/x
3. Step 3: Cross multiply
   2,319.69x = 3,478.73 × 1,440.84
4. Step 4: Simplify right side
   2,319.69x = 5,012,293.33
5. Step 5: Solve for x
   x = 5,012,293.33/2,319.69
6. Step 6: Final answer
   x = 2,160.76