Finding the Fourth Proportional to 1,626.77, 2,244.78 and 918.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,626.77 : 2,244.78 = 918.55 : x
2. Step 2: Convert to fraction form
   1,626.77/2,244.78 = 918.55/x
3. Step 3: Cross multiply
   1,626.77x = 2,244.78 × 918.55
4. Step 4: Simplify right side
   1,626.77x = 2,061,942.67
5. Step 5: Solve for x
   x = 2,061,942.67/1,626.77
6. Step 6: Final answer
   x = 1,267.51