Finding the Fourth Proportional to 2,221.86, 3,332.78 and 923.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.86 : 3,332.78 = 923.33 : x
2. Step 2: Convert to fraction form
   2,221.86/3,332.78 = 923.33/x
3. Step 3: Cross multiply
   2,221.86x = 3,332.78 × 923.33
4. Step 4: Simplify right side
   2,221.86x = 3,077,234.48
5. Step 5: Solve for x
   x = 3,077,234.48/2,221.86
6. Step 6: Final answer
   x = 1,384.98