Finding the Fourth Proportional to 2,173.78, 3,000.25 and 1,229.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.78 : 3,000.25 = 1,229.58 : x
2. Step 2: Convert to fraction form
   2,173.78/3,000.25 = 1,229.58/x
3. Step 3: Cross multiply
   2,173.78x = 3,000.25 × 1,229.58
4. Step 4: Simplify right side
   2,173.78x = 3,689,026.25
5. Step 5: Solve for x
   x = 3,689,026.25/2,173.78
6. Step 6: Final answer
   x = 1,697.06