Finding the Fourth Proportional to 1,401.42, 1,934.02 and 812.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.42 : 1,934.02 = 812.28 : x
2. Step 2: Convert to fraction form
   1,401.42/1,934.02 = 812.28/x
3. Step 3: Cross multiply
   1,401.42x = 1,934.02 × 812.28
4. Step 4: Simplify right side
   1,401.42x = 1,570,954.06
5. Step 5: Solve for x
   x = 1,570,954.06/1,401.42
6. Step 6: Final answer
   x = 1,120.98