Finding the Fourth Proportional to 2,830.55, 3,895.29 and 2,748.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.55 : 3,895.29 = 2,748.74 : x
2. Step 2: Convert to fraction form
   2,830.55/3,895.29 = 2,748.74/x
3. Step 3: Cross multiply
   2,830.55x = 3,895.29 × 2,748.74
4. Step 4: Simplify right side
   2,830.55x = 10,707,119.96
5. Step 5: Solve for x
   x = 10,707,119.96/2,830.55
6. Step 6: Final answer
   x = 3,782.71