Finding the Fourth Proportional to 2,854.56, 3,938.76 and 1,806.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,854.56 : 3,938.76 = 1,806.96 : x
2. Step 2: Convert to fraction form
   2,854.56/3,938.76 = 1,806.96/x
3. Step 3: Cross multiply
   2,854.56x = 3,938.76 × 1,806.96
4. Step 4: Simplify right side
   2,854.56x = 7,117,181.77
5. Step 5: Solve for x
   x = 7,117,181.77/2,854.56
6. Step 6: Final answer
   x = 2,493.27