Finding the Fourth Proportional to 1,018.98, 1,405.76 and 756.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.98 : 1,405.76 = 756.54 : x
2. Step 2: Convert to fraction form
   1,018.98/1,405.76 = 756.54/x
3. Step 3: Cross multiply
   1,018.98x = 1,405.76 × 756.54
4. Step 4: Simplify right side
   1,018.98x = 1,063,509.89
5. Step 5: Solve for x
   x = 1,063,509.89/1,018.98
6. Step 6: Final answer
   x = 1,043.70