Finding the Fourth Proportional to 2,588.83, 3,883.83 and 1,128.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.83 : 3,883.83 = 1,128.40 : x
2. Step 2: Convert to fraction form
   2,588.83/3,883.83 = 1,128.40/x
3. Step 3: Cross multiply
   2,588.83x = 3,883.83 × 1,128.40
4. Step 4: Simplify right side
   2,588.83x = 4,382,513.77
5. Step 5: Solve for x
   x = 4,382,513.77/2,588.83
6. Step 6: Final answer
   x = 1,692.85