Finding the Fourth Proportional to 2,638.24, 3,954.18 and 1,175.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.24 : 3,954.18 = 1,175.72 : x
2. Step 2: Convert to fraction form
   2,638.24/3,954.18 = 1,175.72/x
3. Step 3: Cross multiply
   2,638.24x = 3,954.18 × 1,175.72
4. Step 4: Simplify right side
   2,638.24x = 4,649,008.51
5. Step 5: Solve for x
   x = 4,649,008.51/2,638.24
6. Step 6: Final answer
   x = 1,762.16