Finding the Fourth Proportional to 2,701.76, 4,055.15 and 1,386.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,701.76 : 4,055.15 = 1,386.45 : x
2. Step 2: Convert to fraction form
   2,701.76/4,055.15 = 1,386.45/x
3. Step 3: Cross multiply
   2,701.76x = 4,055.15 × 1,386.45
4. Step 4: Simplify right side
   2,701.76x = 5,622,255.79
5. Step 5: Solve for x
   x = 5,622,255.79/2,701.76
6. Step 6: Final answer
   x = 2,080.96