Finding the Fourth Proportional to 2,641.55, 3,644.60 and 1,507.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.55 : 3,644.60 = 1,507.28 : x
2. Step 2: Convert to fraction form
   2,641.55/3,644.60 = 1,507.28/x
3. Step 3: Cross multiply
   2,641.55x = 3,644.60 × 1,507.28
4. Step 4: Simplify right side
   2,641.55x = 5,493,406.93
5. Step 5: Solve for x
   x = 5,493,406.93/2,641.55
6. Step 6: Final answer
   x = 2,079.62