Finding the Fourth Proportional to 2,793.17, 4,188.69 and 918.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,793.17 : 4,188.69 = 918.62 : x
2. Step 2: Convert to fraction form
   2,793.17/4,188.69 = 918.62/x
3. Step 3: Cross multiply
   2,793.17x = 4,188.69 × 918.62
4. Step 4: Simplify right side
   2,793.17x = 3,847,814.41
5. Step 5: Solve for x
   x = 3,847,814.41/2,793.17
6. Step 6: Final answer
   x = 1,377.58