Finding the Fourth Proportional to 2,900.48, 4,004.24 and 2,222.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,900.48 : 4,004.24 = 2,222.78 : x
2. Step 2: Convert to fraction form
   2,900.48/4,004.24 = 2,222.78/x
3. Step 3: Cross multiply
   2,900.48x = 4,004.24 × 2,222.78
4. Step 4: Simplify right side
   2,900.48x = 8,900,513.45
5. Step 5: Solve for x
   x = 8,900,513.45/2,900.48
6. Step 6: Final answer
   x = 3,068.64