Finding the Fourth Proportional to 2,564.63, 3,539.19 and 1,445.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.63 : 3,539.19 = 1,445.57 : x
2. Step 2: Convert to fraction form
   2,564.63/3,539.19 = 1,445.57/x
3. Step 3: Cross multiply
   2,564.63x = 3,539.19 × 1,445.57
4. Step 4: Simplify right side
   2,564.63x = 5,116,147.89
5. Step 5: Solve for x
   x = 5,116,147.89/2,564.63
6. Step 6: Final answer
   x = 1,994.89