Finding the Fourth Proportional to 1,806.31, 2,494.92 and 1,308.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.31 : 2,494.92 = 1,308.16 : x
2. Step 2: Convert to fraction form
   1,806.31/2,494.92 = 1,308.16/x
3. Step 3: Cross multiply
   1,806.31x = 2,494.92 × 1,308.16
4. Step 4: Simplify right side
   1,806.31x = 3,263,754.55
5. Step 5: Solve for x
   x = 3,263,754.55/1,806.31
6. Step 6: Final answer
   x = 1,806.86