Finding the Fourth Proportional to 2,093.08, 3,139.12 and 860.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.08 : 3,139.12 = 860.16 : x
2. Step 2: Convert to fraction form
   2,093.08/3,139.12 = 860.16/x
3. Step 3: Cross multiply
   2,093.08x = 3,139.12 × 860.16
4. Step 4: Simplify right side
   2,093.08x = 2,700,145.46
5. Step 5: Solve for x
   x = 2,700,145.46/2,093.08
6. Step 6: Final answer
   x = 1,290.03