Finding the Fourth Proportional to 2,210.69, 3,316.55 and 824.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.69 : 3,316.55 = 824.06 : x
2. Step 2: Convert to fraction form
   2,210.69/3,316.55 = 824.06/x
3. Step 3: Cross multiply
   2,210.69x = 3,316.55 × 824.06
4. Step 4: Simplify right side
   2,210.69x = 2,733,015.49
5. Step 5: Solve for x
   x = 2,733,015.49/2,210.69
6. Step 6: Final answer
   x = 1,236.28