Finding the Fourth Proportional to 1,401.49, 1,934.13 and 812.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.49 : 1,934.13 = 812.17 : x
2. Step 2: Convert to fraction form
   1,401.49/1,934.13 = 812.17/x
3. Step 3: Cross multiply
   1,401.49x = 1,934.13 × 812.17
4. Step 4: Simplify right side
   1,401.49x = 1,570,842.36
5. Step 5: Solve for x
   x = 1,570,842.36/1,401.49
6. Step 6: Final answer
   x = 1,120.84