Finding the Fourth Proportional to 2,145.92, 2,958.66 and 1,826.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.92 : 2,958.66 = 1,826.57 : x
2. Step 2: Convert to fraction form
   2,145.92/2,958.66 = 1,826.57/x
3. Step 3: Cross multiply
   2,145.92x = 2,958.66 × 1,826.57
4. Step 4: Simplify right side
   2,145.92x = 5,404,199.60
5. Step 5: Solve for x
   x = 5,404,199.60/2,145.92
6. Step 6: Final answer
   x = 2,518.36