Finding the Fourth Proportional to 2,778.36, 3,859.86 and 2,752.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.36 : 3,859.86 = 2,752.98 : x
2. Step 2: Convert to fraction form
   2,778.36/3,859.86 = 2,752.98/x
3. Step 3: Cross multiply
   2,778.36x = 3,859.86 × 2,752.98
4. Step 4: Simplify right side
   2,778.36x = 10,626,117.38
5. Step 5: Solve for x
   x = 10,626,117.38/2,778.36
6. Step 6: Final answer
   x = 3,824.60