Finding the Fourth Proportional to 2,658.76, 3,983.58 and 1,426.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.76 : 3,983.58 = 1,426.75 : x
2. Step 2: Convert to fraction form
   2,658.76/3,983.58 = 1,426.75/x
3. Step 3: Cross multiply
   2,658.76x = 3,983.58 × 1,426.75
4. Step 4: Simplify right side
   2,658.76x = 5,683,572.77
5. Step 5: Solve for x
   x = 5,683,572.77/2,658.76
6. Step 6: Final answer
   x = 2,137.68