Finding the Fourth Proportional to 2,769.51, 4,151.42 and 1,209.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,769.51 : 4,151.42 = 1,209.22 : x
2. Step 2: Convert to fraction form
   2,769.51/4,151.42 = 1,209.22/x
3. Step 3: Cross multiply
   2,769.51x = 4,151.42 × 1,209.22
4. Step 4: Simplify right side
   2,769.51x = 5,019,979.24
5. Step 5: Solve for x
   x = 5,019,979.24/2,769.51
6. Step 6: Final answer
   x = 1,812.59