Finding the Fourth Proportional to 2,774.28, 4,161 and 1,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.28 : 4,161 = 1,042.50 : x
2. Step 2: Convert to fraction form
   2,774.28/4,161 = 1,042.50/x
3. Step 3: Cross multiply
   2,774.28x = 4,161 × 1,042.50
4. Step 4: Simplify right side
   2,774.28x = 4,337,842.50
5. Step 5: Solve for x
   x = 4,337,842.50/2,774.28
6. Step 6: Final answer
   x = 1,563.59