Finding the Fourth Proportional to 2,742.16, 4,113.60 and 1,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.16 : 4,113.60 = 1,443.72 : x
2. Step 2: Convert to fraction form
   2,742.16/4,113.60 = 1,443.72/x
3. Step 3: Cross multiply
   2,742.16x = 4,113.60 × 1,443.72
4. Step 4: Simplify right side
   2,742.16x = 5,938,886.59
5. Step 5: Solve for x
   x = 5,938,886.59/2,742.16
6. Step 6: Final answer
   x = 2,165.77