Finding the Fourth Proportional to 2,659.38, 3,990.51 and 1,896.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.38 : 3,990.51 = 1,896.18 : x
2. Step 2: Convert to fraction form
   2,659.38/3,990.51 = 1,896.18/x
3. Step 3: Cross multiply
   2,659.38x = 3,990.51 × 1,896.18
4. Step 4: Simplify right side
   2,659.38x = 7,566,725.25
5. Step 5: Solve for x
   x = 7,566,725.25/2,659.38
6. Step 6: Final answer
   x = 2,845.30