Finding the Fourth Proportional to 2,152.69, 3,228.35 and 1,426.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.69 : 3,228.35 = 1,426.12 : x
2. Step 2: Convert to fraction form
   2,152.69/3,228.35 = 1,426.12/x
3. Step 3: Cross multiply
   2,152.69x = 3,228.35 × 1,426.12
4. Step 4: Simplify right side
   2,152.69x = 4,604,014.50
5. Step 5: Solve for x
   x = 4,604,014.50/2,152.69
6. Step 6: Final answer
   x = 2,138.73