Finding the Fourth Proportional to 2,340, 3,227.76 and 1,553.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340 : 3,227.76 = 1,553.76 : x
2. Step 2: Convert to fraction form
   2,340/3,227.76 = 1,553.76/x
3. Step 3: Cross multiply
   2,340x = 3,227.76 × 1,553.76
4. Step 4: Simplify right side
   2,340x = 5,015,164.38
5. Step 5: Solve for x
   x = 5,015,164.38/2,340
6. Step 6: Final answer
   x = 2,143.23