Finding the Fourth Proportional to 2,152.12, 3,227.50 and 835.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.12 : 3,227.50 = 835.78 : x
2. Step 2: Convert to fraction form
   2,152.12/3,227.50 = 835.78/x
3. Step 3: Cross multiply
   2,152.12x = 3,227.50 × 835.78
4. Step 4: Simplify right side
   2,152.12x = 2,697,478.81
5. Step 5: Solve for x
   x = 2,697,478.81/2,152.12
6. Step 6: Final answer
   x = 1,253.41