Finding the Fourth Proportional to 1,896.88, 2,617.72 and 1,100.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.88 : 2,617.72 = 1,100.39 : x
2. Step 2: Convert to fraction form
   1,896.88/2,617.72 = 1,100.39/x
3. Step 3: Cross multiply
   1,896.88x = 2,617.72 × 1,100.39
4. Step 4: Simplify right side
   1,896.88x = 2,880,523.58
5. Step 5: Solve for x
   x = 2,880,523.58/1,896.88
6. Step 6: Final answer
   x = 1,518.56