Finding the Fourth Proportional to 2,100.29, 3,146.32 and 1,919.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.29 : 3,146.32 = 1,919.86 : x
2. Step 2: Convert to fraction form
   2,100.29/3,146.32 = 1,919.86/x
3. Step 3: Cross multiply
   2,100.29x = 3,146.32 × 1,919.86
4. Step 4: Simplify right side
   2,100.29x = 6,040,493.92
5. Step 5: Solve for x
   x = 6,040,493.92/2,100.29
6. Step 6: Final answer
   x = 2,876.03