Finding the Fourth Proportional to 2,640.96, 3,642.72 and 1,536.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.96 : 3,642.72 = 1,536.96 : x
2. Step 2: Convert to fraction form
   2,640.96/3,642.72 = 1,536.96/x
3. Step 3: Cross multiply
   2,640.96x = 3,642.72 × 1,536.96
4. Step 4: Simplify right side
   2,640.96x = 5,598,714.93
5. Step 5: Solve for x
   x = 5,598,714.93/2,640.96
6. Step 6: Final answer
   x = 2,119.95