Finding the Fourth Proportional to 2,612.05, 3,914.83 and 1,908.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.05 : 3,914.83 = 1,908.16 : x
2. Step 2: Convert to fraction form
   2,612.05/3,914.83 = 1,908.16/x
3. Step 3: Cross multiply
   2,612.05x = 3,914.83 × 1,908.16
4. Step 4: Simplify right side
   2,612.05x = 7,470,114.61
5. Step 5: Solve for x
   x = 7,470,114.61/2,612.05
6. Step 6: Final answer
   x = 2,859.87