Finding the Fourth Proportional to 2,672.51, 4,009.22 and 823.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.51 : 4,009.22 = 823.59 : x
2. Step 2: Convert to fraction form
   2,672.51/4,009.22 = 823.59/x
3. Step 3: Cross multiply
   2,672.51x = 4,009.22 × 823.59
4. Step 4: Simplify right side
   2,672.51x = 3,301,953.50
5. Step 5: Solve for x
   x = 3,301,953.50/2,672.51
6. Step 6: Final answer
   x = 1,235.53