Finding the Fourth Proportional to 1,896.51, 2,616.59 and 1,298.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.51 : 2,616.59 = 1,298.49 : x
2. Step 2: Convert to fraction form
   1,896.51/2,616.59 = 1,298.49/x
3. Step 3: Cross multiply
   1,896.51x = 2,616.59 × 1,298.49
4. Step 4: Simplify right side
   1,896.51x = 3,397,609.46
5. Step 5: Solve for x
   x = 3,397,609.46/1,896.51
6. Step 6: Final answer
   x = 1,791.51