Finding the Fourth Proportional to 2,910.82, 4,357.86 and 2,705.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.82 : 4,357.86 = 2,705.79 : x
2. Step 2: Convert to fraction form
   2,910.82/4,357.86 = 2,705.79/x
3. Step 3: Cross multiply
   2,910.82x = 4,357.86 × 2,705.79
4. Step 4: Simplify right side
   2,910.82x = 11,791,454.01
5. Step 5: Solve for x
   x = 11,791,454.01/2,910.82
6. Step 6: Final answer
   x = 4,050.90