Finding the Fourth Proportional to 3,689.42, 5,091.33 and 2,010.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.42 : 5,091.33 = 2,010.86 : x
2. Step 2: Convert to fraction form
   3,689.42/5,091.33 = 2,010.86/x
3. Step 3: Cross multiply
   3,689.42x = 5,091.33 × 2,010.86
4. Step 4: Simplify right side
   3,689.42x = 10,237,951.84
5. Step 5: Solve for x
   x = 10,237,951.84/3,689.42
6. Step 6: Final answer
   x = 2,774.95