Finding the Fourth Proportional to 2,061.12, 3,087.26 and 1,916.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.12 : 3,087.26 = 1,916.85 : x
2. Step 2: Convert to fraction form
   2,061.12/3,087.26 = 1,916.85/x
3. Step 3: Cross multiply
   2,061.12x = 3,087.26 × 1,916.85
4. Step 4: Simplify right side
   2,061.12x = 5,917,814.33
5. Step 5: Solve for x
   x = 5,917,814.33/2,061.12
6. Step 6: Final answer
   x = 2,871.16