Finding the Fourth Proportional to 1,908.94, 2,632.63 and 1,311.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.94 : 2,632.63 = 1,311.16 : x
2. Step 2: Convert to fraction form
   1,908.94/2,632.63 = 1,311.16/x
3. Step 3: Cross multiply
   1,908.94x = 2,632.63 × 1,311.16
4. Step 4: Simplify right side
   1,908.94x = 3,451,799.15
5. Step 5: Solve for x
   x = 3,451,799.15/1,908.94
6. Step 6: Final answer
   x = 1,808.23