Finding the Fourth Proportional to 2,976.06, 4,105.82 and 1,913.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,976.06 : 4,105.82 = 1,913.69 : x
2. Step 2: Convert to fraction form
   2,976.06/4,105.82 = 1,913.69/x
3. Step 3: Cross multiply
   2,976.06x = 4,105.82 × 1,913.69
4. Step 4: Simplify right side
   2,976.06x = 7,857,236.58
5. Step 5: Solve for x
   x = 7,857,236.58/2,976.06
6. Step 6: Final answer
   x = 2,640.15