Finding the Fourth Proportional to 908.42, 1,362.69 and 760.86

Step by Step Solution

1. Step 1: Write the proportion equation
   908.42 : 1,362.69 = 760.86 : x
2. Step 2: Convert to fraction form
   908.42/1,362.69 = 760.86/x
3. Step 3: Cross multiply
   908.42x = 1,362.69 × 760.86
4. Step 4: Simplify right side
   908.42x = 1,036,816.31
5. Step 5: Solve for x
   x = 1,036,816.31/908.42
6. Step 6: Final answer
   x = 1,141.35