Finding the Fourth Proportional to 2,338.72, 3,227.40 and 1,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.72 : 3,227.40 = 1,276.50 : x
2. Step 2: Convert to fraction form
   2,338.72/3,227.40 = 1,276.50/x
3. Step 3: Cross multiply
   2,338.72x = 3,227.40 × 1,276.50
4. Step 4: Simplify right side
   2,338.72x = 4,119,776.10
5. Step 5: Solve for x
   x = 4,119,776.10/2,338.72
6. Step 6: Final answer
   x = 1,761.55