Finding the Fourth Proportional to 2,590.86, 3,575.40 and 1,411.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.86 : 3,575.40 = 1,411.90 : x
2. Step 2: Convert to fraction form
   2,590.86/3,575.40 = 1,411.90/x
3. Step 3: Cross multiply
   2,590.86x = 3,575.40 × 1,411.90
4. Step 4: Simplify right side
   2,590.86x = 5,048,107.26
5. Step 5: Solve for x
   x = 5,048,107.26/2,590.86
6. Step 6: Final answer
   x = 1,948.43