Finding the Fourth Proportional to 2,636.72, 3,954.68 and 1,055.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.72 : 3,954.68 = 1,055.34 : x
2. Step 2: Convert to fraction form
   2,636.72/3,954.68 = 1,055.34/x
3. Step 3: Cross multiply
   2,636.72x = 3,954.68 × 1,055.34
4. Step 4: Simplify right side
   2,636.72x = 4,173,531.99
5. Step 5: Solve for x
   x = 4,173,531.99/2,636.72
6. Step 6: Final answer
   x = 1,582.85