Finding the Fourth Proportional to 2,109.51, 2,911.37 and 1,323.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.51 : 2,911.37 = 1,323.56 : x
2. Step 2: Convert to fraction form
   2,109.51/2,911.37 = 1,323.56/x
3. Step 3: Cross multiply
   2,109.51x = 2,911.37 × 1,323.56
4. Step 4: Simplify right side
   2,109.51x = 3,853,373.54
5. Step 5: Solve for x
   x = 3,853,373.54/2,109.51
6. Step 6: Final answer
   x = 1,826.67