Finding the Fourth Proportional to 2,308.37, 3,478.13 and 1,906.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.37 : 3,478.13 = 1,906.50 : x
2. Step 2: Convert to fraction form
   2,308.37/3,478.13 = 1,906.50/x
3. Step 3: Cross multiply
   2,308.37x = 3,478.13 × 1,906.50
4. Step 4: Simplify right side
   2,308.37x = 6,631,065.50
5. Step 5: Solve for x
   x = 6,631,065.50/2,308.37
6. Step 6: Final answer
   x = 2,872.62