Finding the Fourth Proportional to 1,396.75, 1,927.61 and 923.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.75 : 1,927.61 = 923.83 : x
2. Step 2: Convert to fraction form
   1,396.75/1,927.61 = 923.83/x
3. Step 3: Cross multiply
   1,396.75x = 1,927.61 × 923.83
4. Step 4: Simplify right side
   1,396.75x = 1,780,783.17
5. Step 5: Solve for x
   x = 1,780,783.17/1,396.75
6. Step 6: Final answer
   x = 1,274.95