Finding the Fourth Proportional to 2,146.35, 3,218.98 and 847.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.35 : 3,218.98 = 847.83 : x
2. Step 2: Convert to fraction form
   2,146.35/3,218.98 = 847.83/x
3. Step 3: Cross multiply
   2,146.35x = 3,218.98 × 847.83
4. Step 4: Simplify right side
   2,146.35x = 2,729,147.81
5. Step 5: Solve for x
   x = 2,729,147.81/2,146.35
6. Step 6: Final answer
   x = 1,271.53