Finding the Fourth Proportional to 1,381.34, 1,906.16 and 760.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.34 : 1,906.16 = 760.34 : x
2. Step 2: Convert to fraction form
   1,381.34/1,906.16 = 760.34/x
3. Step 3: Cross multiply
   1,381.34x = 1,906.16 × 760.34
4. Step 4: Simplify right side
   1,381.34x = 1,449,329.69
5. Step 5: Solve for x
   x = 1,449,329.69/1,381.34
6. Step 6: Final answer
   x = 1,049.22