Finding the Fourth Proportional to 3,762.53, 5,644.13 and 989.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,762.53 : 5,644.13 = 989.15 : x
2. Step 2: Convert to fraction form
   3,762.53/5,644.13 = 989.15/x
3. Step 3: Cross multiply
   3,762.53x = 5,644.13 × 989.15
4. Step 4: Simplify right side
   3,762.53x = 5,582,900.35
5. Step 5: Solve for x
   x = 5,582,900.35/3,762.53
6. Step 6: Final answer
   x = 1,483.82