Finding the Fourth Proportional to 2,761.10, 4,142.29 and 1,445.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,761.10 : 4,142.29 = 1,445.57 : x
2. Step 2: Convert to fraction form
   2,761.10/4,142.29 = 1,445.57/x
3. Step 3: Cross multiply
   2,761.10x = 4,142.29 × 1,445.57
4. Step 4: Simplify right side
   2,761.10x = 5,987,970.16
5. Step 5: Solve for x
   x = 5,987,970.16/2,761.10
6. Step 6: Final answer
   x = 2,168.69