Finding the Fourth Proportional to 1,401.20, 1,933.31 and 841.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.20 : 1,933.31 = 841.56 : x
2. Step 2: Convert to fraction form
   1,401.20/1,933.31 = 841.56/x
3. Step 3: Cross multiply
   1,401.20x = 1,933.31 × 841.56
4. Step 4: Simplify right side
   1,401.20x = 1,626,998.47
5. Step 5: Solve for x
   x = 1,626,998.47/1,401.20
6. Step 6: Final answer
   x = 1,161.14