Finding the Fourth Proportional to 2,640.42, 3,642.84 and 1,592.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.42 : 3,642.84 = 1,592.28 : x
2. Step 2: Convert to fraction form
   2,640.42/3,642.84 = 1,592.28/x
3. Step 3: Cross multiply
   2,640.42x = 3,642.84 × 1,592.28
4. Step 4: Simplify right side
   2,640.42x = 5,800,421.28
5. Step 5: Solve for x
   x = 5,800,421.28/2,640.42
6. Step 6: Final answer
   x = 2,196.78