Finding the Fourth Proportional to 2,308.92, 3,186.54 and 1,377.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.92 : 3,186.54 = 1,377.42 : x
2. Step 2: Convert to fraction form
   2,308.92/3,186.54 = 1,377.42/x
3. Step 3: Cross multiply
   2,308.92x = 3,186.54 × 1,377.42
4. Step 4: Simplify right side
   2,308.92x = 4,389,203.93
5. Step 5: Solve for x
   x = 4,389,203.93/2,308.92
6. Step 6: Final answer
   x = 1,900.98