Finding the Fourth Proportional to 3,128.55, 4,693.29 and 1,019.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.55 : 4,693.29 = 1,019.48 : x
2. Step 2: Convert to fraction form
   3,128.55/4,693.29 = 1,019.48/x
3. Step 3: Cross multiply
   3,128.55x = 4,693.29 × 1,019.48
4. Step 4: Simplify right side
   3,128.55x = 4,784,715.29
5. Step 5: Solve for x
   x = 4,784,715.29/3,128.55
6. Step 6: Final answer
   x = 1,529.37