Finding the Fourth Proportional to 1,019.65, 1,401.70 and 877.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.65 : 1,401.70 = 877.33 : x
2. Step 2: Convert to fraction form
   1,019.65/1,401.70 = 877.33/x
3. Step 3: Cross multiply
   1,019.65x = 1,401.70 × 877.33
4. Step 4: Simplify right side
   1,019.65x = 1,229,753.46
5. Step 5: Solve for x
   x = 1,229,753.46/1,019.65
6. Step 6: Final answer
   x = 1,206.05