Finding the Fourth Proportional to 1,401.27, 1,933.69 and 812.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.27 : 1,933.69 = 812.00 : x
2. Step 2: Convert to fraction form
   1,401.27/1,933.69 = 812.00/x
3. Step 3: Cross multiply
   1,401.27x = 1,933.69 × 812.00
4. Step 4: Simplify right side
   1,401.27x = 1,570,142.55
5. Step 5: Solve for x
   x = 1,570,142.55/1,401.27
6. Step 6: Final answer
   x = 1,120.51