Finding the Fourth Proportional to 1,401.97, 1,934.83 and 812.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.97 : 1,934.83 = 812.51 : x
2. Step 2: Convert to fraction form
   1,401.97/1,934.83 = 812.51/x
3. Step 3: Cross multiply
   1,401.97x = 1,934.83 × 812.51
4. Step 4: Simplify right side
   1,401.97x = 1,572,059.05
5. Step 5: Solve for x
   x = 1,572,059.05/1,401.97
6. Step 6: Final answer
   x = 1,121.32