Finding the Fourth Proportional to 2,381.85, 3,573.18 and 822.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.85 : 3,573.18 = 822.01 : x
2. Step 2: Convert to fraction form
   2,381.85/3,573.18 = 822.01/x
3. Step 3: Cross multiply
   2,381.85x = 3,573.18 × 822.01
4. Step 4: Simplify right side
   2,381.85x = 2,937,189.69
5. Step 5: Solve for x
   x = 2,937,189.69/2,381.85
6. Step 6: Final answer
   x = 1,233.15