Finding the Fourth Proportional to 2,193.24, 3,025.80 and 1,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,193.24 : 3,025.80 = 1,308.72 : x
2. Step 2: Convert to fraction form
   2,193.24/3,025.80 = 1,308.72/x
3. Step 3: Cross multiply
   2,193.24x = 3,025.80 × 1,308.72
4. Step 4: Simplify right side
   2,193.24x = 3,959,924.98
5. Step 5: Solve for x
   x = 3,959,924.98/2,193.24
6. Step 6: Final answer
   x = 1,805.51