Finding the Fourth Proportional to 1,233.22, 1,703.25 and 839.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233.22 : 1,703.25 = 839.56 : x
2. Step 2: Convert to fraction form
   1,233.22/1,703.25 = 839.56/x
3. Step 3: Cross multiply
   1,233.22x = 1,703.25 × 839.56
4. Step 4: Simplify right side
   1,233.22x = 1,429,976.37
5. Step 5: Solve for x
   x = 1,429,976.37/1,233.22
6. Step 6: Final answer
   x = 1,159.55