Finding the Fourth Proportional to 1,868.22, 2,576.43 and 1,229.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.22 : 2,576.43 = 1,229.89 : x
2. Step 2: Convert to fraction form
   1,868.22/2,576.43 = 1,229.89/x
3. Step 3: Cross multiply
   1,868.22x = 2,576.43 × 1,229.89
4. Step 4: Simplify right side
   1,868.22x = 3,168,728.71
5. Step 5: Solve for x
   x = 3,168,728.71/1,868.22
6. Step 6: Final answer
   x = 1,696.12