Finding the Fourth Proportional to 2,085.12, 2,876.16 and 1,908.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.12 : 2,876.16 = 1,908.48 : x
2. Step 2: Convert to fraction form
   2,085.12/2,876.16 = 1,908.48/x
3. Step 3: Cross multiply
   2,085.12x = 2,876.16 × 1,908.48
4. Step 4: Simplify right side
   2,085.12x = 5,489,093.84
5. Step 5: Solve for x
   x = 5,489,093.84/2,085.12
6. Step 6: Final answer
   x = 2,632.51