Finding the Fourth Proportional to 1,231.84, 1,699.88 and 672.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.84 : 1,699.88 = 672.27 : x
2. Step 2: Convert to fraction form
   1,231.84/1,699.88 = 672.27/x
3. Step 3: Cross multiply
   1,231.84x = 1,699.88 × 672.27
4. Step 4: Simplify right side
   1,231.84x = 1,142,778.33
5. Step 5: Solve for x
   x = 1,142,778.33/1,231.84
6. Step 6: Final answer
   x = 927.70