Finding the Fourth Proportional to 1,908.24, 2,632.24 and 1,208.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.24 : 2,632.24 = 1,208.40 : x
2. Step 2: Convert to fraction form
   1,908.24/2,632.24 = 1,208.40/x
3. Step 3: Cross multiply
   1,908.24x = 2,632.24 × 1,208.40
4. Step 4: Simplify right side
   1,908.24x = 3,180,798.82
5. Step 5: Solve for x
   x = 3,180,798.82/1,908.24
6. Step 6: Final answer
   x = 1,666.88