Finding the Fourth Proportional to 2,610.33, 3,911.85 and 1,919.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.33 : 3,911.85 = 1,919.81 : x
2. Step 2: Convert to fraction form
   2,610.33/3,911.85 = 1,919.81/x
3. Step 3: Cross multiply
   2,610.33x = 3,911.85 × 1,919.81
4. Step 4: Simplify right side
   2,610.33x = 7,510,008.75
5. Step 5: Solve for x
   x = 7,510,008.75/2,610.33
6. Step 6: Final answer
   x = 2,877.03