Finding the Fourth Proportional to 2,239.50, 3,091.32 and 1,308

Step by Step Solution

1. Step 1: Write the proportion equation
   2,239.50 : 3,091.32 = 1,308 : x
2. Step 2: Convert to fraction form
   2,239.50/3,091.32 = 1,308/x
3. Step 3: Cross multiply
   2,239.50x = 3,091.32 × 1,308
4. Step 4: Simplify right side
   2,239.50x = 4,043,446.56
5. Step 5: Solve for x
   x = 4,043,446.56/2,239.50
6. Step 6: Final answer
   x = 1,805.51