Finding the Fourth Proportional to 1,405.59, 1,939.17 and 908.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.59 : 1,939.17 = 908.52 : x
2. Step 2: Convert to fraction form
   1,405.59/1,939.17 = 908.52/x
3. Step 3: Cross multiply
   1,405.59x = 1,939.17 × 908.52
4. Step 4: Simplify right side
   1,405.59x = 1,761,774.73
5. Step 5: Solve for x
   x = 1,761,774.73/1,405.59
6. Step 6: Final answer
   x = 1,253.41