Finding the Fourth Proportional to 1,404.64, 1,939.36 and 908.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.64 : 1,939.36 = 908.48 : x
2. Step 2: Convert to fraction form
   1,404.64/1,939.36 = 908.48/x
3. Step 3: Cross multiply
   1,404.64x = 1,939.36 × 908.48
4. Step 4: Simplify right side
   1,404.64x = 1,761,869.77
5. Step 5: Solve for x
   x = 1,761,869.77/1,404.64
6. Step 6: Final answer
   x = 1,254.32