Finding the Fourth Proportional to 2,590.28, 3,886.58 and 1,357.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.28 : 3,886.58 = 1,357.41 : x
2. Step 2: Convert to fraction form
   2,590.28/3,886.58 = 1,357.41/x
3. Step 3: Cross multiply
   2,590.28x = 3,886.58 × 1,357.41
4. Step 4: Simplify right side
   2,590.28x = 5,275,666.29
5. Step 5: Solve for x
   x = 5,275,666.29/2,590.28
6. Step 6: Final answer
   x = 2,036.72