Finding the Fourth Proportional to 1,401.03, 1,933.47 and 811.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.03 : 1,933.47 = 811.62 : x
2. Step 2: Convert to fraction form
   1,401.03/1,933.47 = 811.62/x
3. Step 3: Cross multiply
   1,401.03x = 1,933.47 × 811.62
4. Step 4: Simplify right side
   1,401.03x = 1,569,242.92
5. Step 5: Solve for x
   x = 1,569,242.92/1,401.03
6. Step 6: Final answer
   x = 1,120.06