Finding the Fourth Proportional to 2,811.41, 4,216.38 and 836.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.41 : 4,216.38 = 836.50 : x
2. Step 2: Convert to fraction form
   2,811.41/4,216.38 = 836.50/x
3. Step 3: Cross multiply
   2,811.41x = 4,216.38 × 836.50
4. Step 4: Simplify right side
   2,811.41x = 3,527,010.31
5. Step 5: Solve for x
   x = 3,527,010.31/2,811.41
6. Step 6: Final answer
   x = 1,254.53