Finding the Fourth Proportional to 1,896.01, 2,615.90 and 1,297.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.01 : 2,615.90 = 1,297.99 : x
2. Step 2: Convert to fraction form
   1,896.01/2,615.90 = 1,297.99/x
3. Step 3: Cross multiply
   1,896.01x = 2,615.90 × 1,297.99
4. Step 4: Simplify right side
   1,896.01x = 3,395,408.82
5. Step 5: Solve for x
   x = 3,395,408.82/1,896.01
6. Step 6: Final answer
   x = 1,790.82