Finding the Fourth Proportional to 2,774.48, 3,822.86 and 2,145.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.48 : 3,822.86 = 2,145.11 : x
2. Step 2: Convert to fraction form
   2,774.48/3,822.86 = 2,145.11/x
3. Step 3: Cross multiply
   2,774.48x = 3,822.86 × 2,145.11
4. Step 4: Simplify right side
   2,774.48x = 8,200,441.46
5. Step 5: Solve for x
   x = 8,200,441.46/2,774.48
6. Step 6: Final answer
   x = 2,955.67