Finding the Fourth Proportional to 3,584.28, 5,375.96 and 987.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,584.28 : 5,375.96 = 987.42 : x
2. Step 2: Convert to fraction form
   3,584.28/5,375.96 = 987.42/x
3. Step 3: Cross multiply
   3,584.28x = 5,375.96 × 987.42
4. Step 4: Simplify right side
   3,584.28x = 5,308,330.42
5. Step 5: Solve for x
   x = 5,308,330.42/3,584.28
6. Step 6: Final answer
   x = 1,481.00