Finding the Fourth Proportional to 2,673.60, 4,009.18 and 824.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,673.60 : 4,009.18 = 824.37 : x
2. Step 2: Convert to fraction form
   2,673.60/4,009.18 = 824.37/x
3. Step 3: Cross multiply
   2,673.60x = 4,009.18 × 824.37
4. Step 4: Simplify right side
   2,673.60x = 3,305,047.72
5. Step 5: Solve for x
   x = 3,305,047.72/2,673.60
6. Step 6: Final answer
   x = 1,236.18