Finding the Fourth Proportional to 3,801.86, 5,245.33 and 2,123

Step by Step Solution

1. Step 1: Write the proportion equation
   3,801.86 : 5,245.33 = 2,123 : x
2. Step 2: Convert to fraction form
   3,801.86/5,245.33 = 2,123/x
3. Step 3: Cross multiply
   3,801.86x = 5,245.33 × 2,123
4. Step 4: Simplify right side
   3,801.86x = 11,135,835.59
5. Step 5: Solve for x
   x = 11,135,835.59/3,801.86
6. Step 6: Final answer
   x = 2,929.05