Finding the Fourth Proportional to 2,093.86, 3,139.59 and 862.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.86 : 3,139.59 = 862.13 : x
2. Step 2: Convert to fraction form
   2,093.86/3,139.59 = 862.13/x
3. Step 3: Cross multiply
   2,093.86x = 3,139.59 × 862.13
4. Step 4: Simplify right side
   2,093.86x = 2,706,734.73
5. Step 5: Solve for x
   x = 2,706,734.73/2,093.86
6. Step 6: Final answer
   x = 1,292.70