Finding the Fourth Proportional to 2,847.10, 4,271.86 and 1,386.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,847.10 : 4,271.86 = 1,386.26 : x
2. Step 2: Convert to fraction form
   2,847.10/4,271.86 = 1,386.26/x
3. Step 3: Cross multiply
   2,847.10x = 4,271.86 × 1,386.26
4. Step 4: Simplify right side
   2,847.10x = 5,921,908.64
5. Step 5: Solve for x
   x = 5,921,908.64/2,847.10
6. Step 6: Final answer
   x = 2,079.98