Finding the Fourth Proportional to 1,742.42, 2,402.78 and 1,044.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.42 : 2,402.78 = 1,044.20 : x
2. Step 2: Convert to fraction form
   1,742.42/2,402.78 = 1,044.20/x
3. Step 3: Cross multiply
   1,742.42x = 2,402.78 × 1,044.20
4. Step 4: Simplify right side
   1,742.42x = 2,508,982.88
5. Step 5: Solve for x
   x = 2,508,982.88/1,742.42
6. Step 6: Final answer
   x = 1,439.94