Finding the Fourth Proportional to 2,564.43, 3,538.87 and 1,445.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.43 : 3,538.87 = 1,445.47 : x
2. Step 2: Convert to fraction form
   2,564.43/3,538.87 = 1,445.47/x
3. Step 3: Cross multiply
   2,564.43x = 3,538.87 × 1,445.47
4. Step 4: Simplify right side
   2,564.43x = 5,115,330.42
5. Step 5: Solve for x
   x = 5,115,330.42/2,564.43
6. Step 6: Final answer
   x = 1,994.72