Finding the Fourth Proportional to 2,112.76, 3,148.79 and 2,109.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.76 : 3,148.79 = 2,109.52 : x
2. Step 2: Convert to fraction form
   2,112.76/3,148.79 = 2,109.52/x
3. Step 3: Cross multiply
   2,112.76x = 3,148.79 × 2,109.52
4. Step 4: Simplify right side
   2,112.76x = 6,642,435.48
5. Step 5: Solve for x
   x = 6,642,435.48/2,112.76
6. Step 6: Final answer
   x = 3,143.96