Finding the Fourth Proportional to 2,575.40, 3,871.67 and 2,091.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.40 : 3,871.67 = 2,091.83 : x
2. Step 2: Convert to fraction form
   2,575.40/3,871.67 = 2,091.83/x
3. Step 3: Cross multiply
   2,575.40x = 3,871.67 × 2,091.83
4. Step 4: Simplify right side
   2,575.40x = 8,098,845.64
5. Step 5: Solve for x
   x = 8,098,845.64/2,575.40
6. Step 6: Final answer
   x = 3,144.70