Finding the Fourth Proportional to 2,061.19, 2,844.45 and 1,222.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.19 : 2,844.45 = 1,222.31 : x
2. Step 2: Convert to fraction form
   2,061.19/2,844.45 = 1,222.31/x
3. Step 3: Cross multiply
   2,061.19x = 2,844.45 × 1,222.31
4. Step 4: Simplify right side
   2,061.19x = 3,476,806.79
5. Step 5: Solve for x
   x = 3,476,806.79/2,061.19
6. Step 6: Final answer
   x = 1,686.80