Finding the Fourth Proportional to 2,923.98, 4,365.15 and 2,821.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,923.98 : 4,365.15 = 2,821.46 : x
2. Step 2: Convert to fraction form
   2,923.98/4,365.15 = 2,821.46/x
3. Step 3: Cross multiply
   2,923.98x = 4,365.15 × 2,821.46
4. Step 4: Simplify right side
   2,923.98x = 12,316,096.12
5. Step 5: Solve for x
   x = 12,316,096.12/2,923.98
6. Step 6: Final answer
   x = 4,212.10