Finding the Fourth Proportional to 1,743.69, 2,614.28 and 818.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.69 : 2,614.28 = 818.78 : x
2. Step 2: Convert to fraction form
   1,743.69/2,614.28 = 818.78/x
3. Step 3: Cross multiply
   1,743.69x = 2,614.28 × 818.78
4. Step 4: Simplify right side
   1,743.69x = 2,140,503.01
5. Step 5: Solve for x
   x = 2,140,503.01/1,743.69
6. Step 6: Final answer
   x = 1,227.57