Finding the Fourth Proportional to 1,401.82, 1,934.97 and 812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.82 : 1,934.97 = 812.50 : x
2. Step 2: Convert to fraction form
   1,401.82/1,934.97 = 812.50/x
3. Step 3: Cross multiply
   1,401.82x = 1,934.97 × 812.50
4. Step 4: Simplify right side
   1,401.82x = 1,572,163.13
5. Step 5: Solve for x
   x = 1,572,163.13/1,401.82
6. Step 6: Final answer
   x = 1,121.52