Finding the Fourth Proportional to 2,147.80, 3,204.59 and 1,836.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.80 : 3,204.59 = 1,836.22 : x
2. Step 2: Convert to fraction form
   2,147.80/3,204.59 = 1,836.22/x
3. Step 3: Cross multiply
   2,147.80x = 3,204.59 × 1,836.22
4. Step 4: Simplify right side
   2,147.80x = 5,884,332.25
5. Step 5: Solve for x
   x = 5,884,332.25/2,147.80
6. Step 6: Final answer
   x = 2,739.70