Finding the Fourth Proportional to 2,336.79, 3,221.34 and 1,672.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.79 : 3,221.34 = 1,672.47 : x
2. Step 2: Convert to fraction form
   2,336.79/3,221.34 = 1,672.47/x
3. Step 3: Cross multiply
   2,336.79x = 3,221.34 × 1,672.47
4. Step 4: Simplify right side
   2,336.79x = 5,387,594.51
5. Step 5: Solve for x
   x = 5,387,594.51/2,336.79
6. Step 6: Final answer
   x = 2,305.55