Finding the Fourth Proportional to 2,105.28, 3,161.16 and 1,876.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.28 : 3,161.16 = 1,876.32 : x
2. Step 2: Convert to fraction form
   2,105.28/3,161.16 = 1,876.32/x
3. Step 3: Cross multiply
   2,105.28x = 3,161.16 × 1,876.32
4. Step 4: Simplify right side
   2,105.28x = 5,931,347.73
5. Step 5: Solve for x
   x = 5,931,347.73/2,105.28
6. Step 6: Final answer
   x = 2,817.37