Finding the Fourth Proportional to 2,274.28, 3,139.31 and 1,677.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.28 : 3,139.31 = 1,677.47 : x
2. Step 2: Convert to fraction form
   2,274.28/3,139.31 = 1,677.47/x
3. Step 3: Cross multiply
   2,274.28x = 3,139.31 × 1,677.47
4. Step 4: Simplify right side
   2,274.28x = 5,266,098.35
5. Step 5: Solve for x
   x = 5,266,098.35/2,274.28
6. Step 6: Final answer
   x = 2,315.50