Finding the Fourth Proportional to 2,088.87, 3,128.69 and 1,429.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,088.87 : 3,128.69 = 1,429.19 : x
2. Step 2: Convert to fraction form
   2,088.87/3,128.69 = 1,429.19/x
3. Step 3: Cross multiply
   2,088.87x = 3,128.69 × 1,429.19
4. Step 4: Simplify right side
   2,088.87x = 4,471,469.67
5. Step 5: Solve for x
   x = 4,471,469.67/2,088.87
6. Step 6: Final answer
   x = 2,140.62