Finding the Fourth Proportional to 2,980.35, 4,114.22 and 2,145.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.35 : 4,114.22 = 2,145.15 : x
2. Step 2: Convert to fraction form
   2,980.35/4,114.22 = 2,145.15/x
3. Step 3: Cross multiply
   2,980.35x = 4,114.22 × 2,145.15
4. Step 4: Simplify right side
   2,980.35x = 8,825,608.31
5. Step 5: Solve for x
   x = 8,825,608.31/2,980.35
6. Step 6: Final answer
   x = 2,961.27