Finding the Fourth Proportional to 3,888.96, 5,830.71 and 1,806.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,888.96 : 5,830.71 = 1,806.76 : x
2. Step 2: Convert to fraction form
   3,888.96/5,830.71 = 1,806.76/x
3. Step 3: Cross multiply
   3,888.96x = 5,830.71 × 1,806.76
4. Step 4: Simplify right side
   3,888.96x = 10,534,693.60
5. Step 5: Solve for x
   x = 10,534,693.60/3,888.96
6. Step 6: Final answer
   x = 2,708.87