Finding the Fourth Proportional to 2,229.68, 3,076.30 and 1,345.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,229.68 : 3,076.30 = 1,345.42 : x
2. Step 2: Convert to fraction form
   2,229.68/3,076.30 = 1,345.42/x
3. Step 3: Cross multiply
   2,229.68x = 3,076.30 × 1,345.42
4. Step 4: Simplify right side
   2,229.68x = 4,138,915.55
5. Step 5: Solve for x
   x = 4,138,915.55/2,229.68
6. Step 6: Final answer
   x = 1,856.28