Finding the Fourth Proportional to 1,908.88, 2,864.89 and 814.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.88 : 2,864.89 = 814.48 : x
2. Step 2: Convert to fraction form
   1,908.88/2,864.89 = 814.48/x
3. Step 3: Cross multiply
   1,908.88x = 2,864.89 × 814.48
4. Step 4: Simplify right side
   1,908.88x = 2,333,395.61
5. Step 5: Solve for x
   x = 2,333,395.61/1,908.88
6. Step 6: Final answer
   x = 1,222.39