Finding the Fourth Proportional to 2,159.13, 2,978.18 and 1,995.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.13 : 2,978.18 = 1,995.09 : x
2. Step 2: Convert to fraction form
   2,159.13/2,978.18 = 1,995.09/x
3. Step 3: Cross multiply
   2,159.13x = 2,978.18 × 1,995.09
4. Step 4: Simplify right side
   2,159.13x = 5,941,727.16
5. Step 5: Solve for x
   x = 5,941,727.16/2,159.13
6. Step 6: Final answer
   x = 2,751.91