Finding the Fourth Proportional to 2,308.52, 3,188.41 and 1,681.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.52 : 3,188.41 = 1,681.85 : x
2. Step 2: Convert to fraction form
   2,308.52/3,188.41 = 1,681.85/x
3. Step 3: Cross multiply
   2,308.52x = 3,188.41 × 1,681.85
4. Step 4: Simplify right side
   2,308.52x = 5,362,440.59
5. Step 5: Solve for x
   x = 5,362,440.59/2,308.52
6. Step 6: Final answer
   x = 2,322.89