Finding the Fourth Proportional to 3,638.72, 5,458.55 and 1,041.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.72 : 5,458.55 = 1,041.72 : x
2. Step 2: Convert to fraction form
   3,638.72/5,458.55 = 1,041.72/x
3. Step 3: Cross multiply
   3,638.72x = 5,458.55 × 1,041.72
4. Step 4: Simplify right side
   3,638.72x = 5,686,275.50
5. Step 5: Solve for x
   x = 5,686,275.50/3,638.72
6. Step 6: Final answer
   x = 1,562.72