Finding the Fourth Proportional to 2,145.22, 2,958.07 and 1,862.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.22 : 2,958.07 = 1,862.96 : x
2. Step 2: Convert to fraction form
   2,145.22/2,958.07 = 1,862.96/x
3. Step 3: Cross multiply
   2,145.22x = 2,958.07 × 1,862.96
4. Step 4: Simplify right side
   2,145.22x = 5,510,768.82
5. Step 5: Solve for x
   x = 5,510,768.82/2,145.22
6. Step 6: Final answer
   x = 2,568.86