Finding the Fourth Proportional to 2,308.66, 3,188.96 and 1,868.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.66 : 3,188.96 = 1,868.22 : x
2. Step 2: Convert to fraction form
   2,308.66/3,188.96 = 1,868.22/x
3. Step 3: Cross multiply
   2,308.66x = 3,188.96 × 1,868.22
4. Step 4: Simplify right side
   2,308.66x = 5,957,678.85
5. Step 5: Solve for x
   x = 5,957,678.85/2,308.66
6. Step 6: Final answer
   x = 2,580.58