Finding the Fourth Proportional to 1,401.46, 1,934.08 and 812.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.46 : 1,934.08 = 812.18 : x
2. Step 2: Convert to fraction form
   1,401.46/1,934.08 = 812.18/x
3. Step 3: Cross multiply
   1,401.46x = 1,934.08 × 812.18
4. Step 4: Simplify right side
   1,401.46x = 1,570,821.09
5. Step 5: Solve for x
   x = 1,570,821.09/1,401.46
6. Step 6: Final answer
   x = 1,120.85