Finding the Fourth Proportional to 2,109.38, 2,911.88 and 1,323.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.38 : 2,911.88 = 1,323.88 : x
2. Step 2: Convert to fraction form
   2,109.38/2,911.88 = 1,323.88/x
3. Step 3: Cross multiply
   2,109.38x = 2,911.88 × 1,323.88
4. Step 4: Simplify right side
   2,109.38x = 3,854,975.72
5. Step 5: Solve for x
   x = 3,854,975.72/2,109.38
6. Step 6: Final answer
   x = 1,827.54