Finding the Fourth Proportional to 1,505.78, 2,077.83 and 908.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505.78 : 2,077.83 = 908.37 : x
2. Step 2: Convert to fraction form
   1,505.78/2,077.83 = 908.37/x
3. Step 3: Cross multiply
   1,505.78x = 2,077.83 × 908.37
4. Step 4: Simplify right side
   1,505.78x = 1,887,438.44
5. Step 5: Solve for x
   x = 1,887,438.44/1,505.78
6. Step 6: Final answer
   x = 1,253.47