Finding the Fourth Proportional to 2,792.25, 4,188.04 and 918.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,792.25 : 4,188.04 = 918.05 : x
2. Step 2: Convert to fraction form
   2,792.25/4,188.04 = 918.05/x
3. Step 3: Cross multiply
   2,792.25x = 4,188.04 × 918.05
4. Step 4: Simplify right side
   2,792.25x = 3,844,806.89
5. Step 5: Solve for x
   x = 3,844,806.89/2,792.25
6. Step 6: Final answer
   x = 1,376.96