Finding the Fourth Proportional to 2,146.34, 3,219.71 and 847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.34 : 3,219.71 = 847.50 : x
2. Step 2: Convert to fraction form
   2,146.34/3,219.71 = 847.50/x
3. Step 3: Cross multiply
   2,146.34x = 3,219.71 × 847.50
4. Step 4: Simplify right side
   2,146.34x = 2,728,699.99
5. Step 5: Solve for x
   x = 2,728,699.99/2,146.34
6. Step 6: Final answer
   x = 1,271.33