Finding the Fourth Proportional to 2,308.23, 3,188.03 and 1,681.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.23 : 3,188.03 = 1,681.56 : x
2. Step 2: Convert to fraction form
   2,308.23/3,188.03 = 1,681.56/x
3. Step 3: Cross multiply
   2,308.23x = 3,188.03 × 1,681.56
4. Step 4: Simplify right side
   2,308.23x = 5,360,855.32
5. Step 5: Solve for x
   x = 5,360,855.32/2,308.23
6. Step 6: Final answer
   x = 2,322.50