Finding the Fourth Proportional to 2,592.21, 3,882.12 and 1,420.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,592.21 : 3,882.12 = 1,420.45 : x
2. Step 2: Convert to fraction form
   2,592.21/3,882.12 = 1,420.45/x
3. Step 3: Cross multiply
   2,592.21x = 3,882.12 × 1,420.45
4. Step 4: Simplify right side
   2,592.21x = 5,514,357.35
5. Step 5: Solve for x
   x = 5,514,357.35/2,592.21
6. Step 6: Final answer
   x = 2,127.28