Finding the Fourth Proportional to 1,896.80, 2,616.12 and 1,233.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.80 : 2,616.12 = 1,233.88 : x
2. Step 2: Convert to fraction form
   1,896.80/2,616.12 = 1,233.88/x
3. Step 3: Cross multiply
   1,896.80x = 2,616.12 × 1,233.88
4. Step 4: Simplify right side
   1,896.80x = 3,227,978.15
5. Step 5: Solve for x
   x = 3,227,978.15/1,896.80
6. Step 6: Final answer
   x = 1,701.80