Finding the Fourth Proportional to 1,908.17, 2,631.52 and 1,244.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.17 : 2,631.52 = 1,244.78 : x
2. Step 2: Convert to fraction form
   1,908.17/2,631.52 = 1,244.78/x
3. Step 3: Cross multiply
   1,908.17x = 2,631.52 × 1,244.78
4. Step 4: Simplify right side
   1,908.17x = 3,275,663.47
5. Step 5: Solve for x
   x = 3,275,663.47/1,908.17
6. Step 6: Final answer
   x = 1,716.65