Finding the Fourth Proportional to 2,639.68, 3,642.72 and 1,592.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.68 : 3,642.72 = 1,592.32 : x
2. Step 2: Convert to fraction form
   2,639.68/3,642.72 = 1,592.32/x
3. Step 3: Cross multiply
   2,639.68x = 3,642.72 × 1,592.32
4. Step 4: Simplify right side
   2,639.68x = 5,800,375.91
5. Step 5: Solve for x
   x = 5,800,375.91/2,639.68
6. Step 6: Final answer
   x = 2,197.38