Finding the Fourth Proportional to 3,978.69, 5,962.36 and 1,896.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.69 : 5,962.36 = 1,896.99 : x
2. Step 2: Convert to fraction form
   3,978.69/5,962.36 = 1,896.99/x
3. Step 3: Cross multiply
   3,978.69x = 5,962.36 × 1,896.99
4. Step 4: Simplify right side
   3,978.69x = 11,310,537.30
5. Step 5: Solve for x
   x = 11,310,537.30/3,978.69
6. Step 6: Final answer
   x = 2,842.78