Finding the Fourth Proportional to 2,870.22, 3,960.30 and 1,876.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.22 : 3,960.30 = 1,876.96 : x
2. Step 2: Convert to fraction form
   2,870.22/3,960.30 = 1,876.96/x
3. Step 3: Cross multiply
   2,870.22x = 3,960.30 × 1,876.96
4. Step 4: Simplify right side
   2,870.22x = 7,433,324.69
5. Step 5: Solve for x
   x = 7,433,324.69/2,870.22
6. Step 6: Final answer
   x = 2,589.81