Finding the Fourth Proportional to 2,093.75, 3,139.86 and 860.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.75 : 3,139.86 = 860.52 : x
2. Step 2: Convert to fraction form
   2,093.75/3,139.86 = 860.52/x
3. Step 3: Cross multiply
   2,093.75x = 3,139.86 × 860.52
4. Step 4: Simplify right side
   2,093.75x = 2,701,927.33
5. Step 5: Solve for x
   x = 2,701,927.33/2,093.75
6. Step 6: Final answer
   x = 1,290.47