Finding the Fourth Proportional to 3,728.42, 5,589.15 and 1,261.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.42 : 5,589.15 = 1,261.52 : x
2. Step 2: Convert to fraction form
   3,728.42/5,589.15 = 1,261.52/x
3. Step 3: Cross multiply
   3,728.42x = 5,589.15 × 1,261.52
4. Step 4: Simplify right side
   3,728.42x = 7,050,804.23
5. Step 5: Solve for x
   x = 7,050,804.23/3,728.42
6. Step 6: Final answer
   x = 1,891.10