Finding the Fourth Proportional to 3,990.16, 5,984.34 and 1,524.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990.16 : 5,984.34 = 1,524.10 : x
2. Step 2: Convert to fraction form
   3,990.16/5,984.34 = 1,524.10/x
3. Step 3: Cross multiply
   3,990.16x = 5,984.34 × 1,524.10
4. Step 4: Simplify right side
   3,990.16x = 9,120,732.59
5. Step 5: Solve for x
   x = 9,120,732.59/3,990.16
6. Step 6: Final answer
   x = 2,285.81