Finding the Fourth Proportional to 1,405.45, 1,938.83 and 908.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.45 : 1,938.83 = 908.52 : x
2. Step 2: Convert to fraction form
   1,405.45/1,938.83 = 908.52/x
3. Step 3: Cross multiply
   1,405.45x = 1,938.83 × 908.52
4. Step 4: Simplify right side
   1,405.45x = 1,761,465.83
5. Step 5: Solve for x
   x = 1,761,465.83/1,405.45
6. Step 6: Final answer
   x = 1,253.31