Finding the Fourth Proportional to 2,564.88, 3,539.40 and 1,445.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.88 : 3,539.40 = 1,445.82 : x
2. Step 2: Convert to fraction form
   2,564.88/3,539.40 = 1,445.82/x
3. Step 3: Cross multiply
   2,564.88x = 3,539.40 × 1,445.82
4. Step 4: Simplify right side
   2,564.88x = 5,117,335.31
5. Step 5: Solve for x
   x = 5,117,335.31/2,564.88
6. Step 6: Final answer
   x = 1,995.16