Finding the Fourth Proportional to 1,401.71, 1,933.47 and 812.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.71 : 1,933.47 = 812.03 : x
2. Step 2: Convert to fraction form
   1,401.71/1,933.47 = 812.03/x
3. Step 3: Cross multiply
   1,401.71x = 1,933.47 × 812.03
4. Step 4: Simplify right side
   1,401.71x = 1,570,025.98
5. Step 5: Solve for x
   x = 1,570,025.98/1,401.71
6. Step 6: Final answer
   x = 1,120.08