Finding the Fourth Proportional to 1,396.82, 1,926.56 and 923.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.82 : 1,926.56 = 923.88 : x
2. Step 2: Convert to fraction form
   1,396.82/1,926.56 = 923.88/x
3. Step 3: Cross multiply
   1,396.82x = 1,926.56 × 923.88
4. Step 4: Simplify right side
   1,396.82x = 1,779,910.25
5. Step 5: Solve for x
   x = 1,779,910.25/1,396.82
6. Step 6: Final answer
   x = 1,274.26