Finding the Fourth Proportional to 1,806.72, 2,711.04 and 1,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.72 : 2,711.04 = 1,078.72 : x
2. Step 2: Convert to fraction form
   1,806.72/2,711.04 = 1,078.72/x
3. Step 3: Cross multiply
   1,806.72x = 2,711.04 × 1,078.72
4. Step 4: Simplify right side
   1,806.72x = 2,924,453.07
5. Step 5: Solve for x
   x = 2,924,453.07/1,806.72
6. Step 6: Final answer
   x = 1,618.65