Finding the Fourth Proportional to 1,418.50, 1,956.27 and 920.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.50 : 1,956.27 = 920.67 : x
2. Step 2: Convert to fraction form
   1,418.50/1,956.27 = 920.67/x
3. Step 3: Cross multiply
   1,418.50x = 1,956.27 × 920.67
4. Step 4: Simplify right side
   1,418.50x = 1,801,069.32
5. Step 5: Solve for x
   x = 1,801,069.32/1,418.50
6. Step 6: Final answer
   x = 1,269.70