Finding the Fourth Proportional to 1,018.50, 1,406.34 and 797.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.50 : 1,406.34 = 797.07 : x
2. Step 2: Convert to fraction form
   1,018.50/1,406.34 = 797.07/x
3. Step 3: Cross multiply
   1,018.50x = 1,406.34 × 797.07
4. Step 4: Simplify right side
   1,018.50x = 1,120,951.42
5. Step 5: Solve for x
   x = 1,120,951.42/1,018.50
6. Step 6: Final answer
   x = 1,100.59