Finding the Fourth Proportional to 1,019.47, 1,405.39 and 753.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.47 : 1,405.39 = 753.52 : x
2. Step 2: Convert to fraction form
   1,019.47/1,405.39 = 753.52/x
3. Step 3: Cross multiply
   1,019.47x = 1,405.39 × 753.52
4. Step 4: Simplify right side
   1,019.47x = 1,058,978.68
5. Step 5: Solve for x
   x = 1,058,978.68/1,019.47
6. Step 6: Final answer
   x = 1,038.76