Finding the Fourth Proportional to 2,767.76, 4,152.41 and 1,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,767.76 : 4,152.41 = 1,380.72 : x
2. Step 2: Convert to fraction form
   2,767.76/4,152.41 = 1,380.72/x
3. Step 3: Cross multiply
   2,767.76x = 4,152.41 × 1,380.72
4. Step 4: Simplify right side
   2,767.76x = 5,733,308.63
5. Step 5: Solve for x
   x = 5,733,308.63/2,767.76
6. Step 6: Final answer
   x = 2,071.47