Finding the Fourth Proportional to 2,229.60, 3,076.88 and 1,345.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,229.60 : 3,076.88 = 1,345.24 : x
2. Step 2: Convert to fraction form
   2,229.60/3,076.88 = 1,345.24/x
3. Step 3: Cross multiply
   2,229.60x = 3,076.88 × 1,345.24
4. Step 4: Simplify right side
   2,229.60x = 4,139,142.05
5. Step 5: Solve for x
   x = 4,139,142.05/2,229.60
6. Step 6: Final answer
   x = 1,856.45