Finding the Fourth Proportional to 1,508, 2,086.32 and 1,321.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,508 : 2,086.32 = 1,321.28 : x
2. Step 2: Convert to fraction form
   1,508/2,086.32 = 1,321.28/x
3. Step 3: Cross multiply
   1,508x = 2,086.32 × 1,321.28
4. Step 4: Simplify right side
   1,508x = 2,756,612.89
5. Step 5: Solve for x
   x = 2,756,612.89/1,508
6. Step 6: Final answer
   x = 1,827.99