Finding the Fourth Proportional to 2,774.20, 3,820.60 and 2,713.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.20 : 3,820.60 = 2,713.72 : x
2. Step 2: Convert to fraction form
   2,774.20/3,820.60 = 2,713.72/x
3. Step 3: Cross multiply
   2,774.20x = 3,820.60 × 2,713.72
4. Step 4: Simplify right side
   2,774.20x = 10,368,038.63
5. Step 5: Solve for x
   x = 10,368,038.63/2,774.20
6. Step 6: Final answer
   x = 3,737.31