Finding the Fourth Proportional to 2,590.16, 3,884.49 and 1,128.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.16 : 3,884.49 = 1,128.96 : x
2. Step 2: Convert to fraction form
   2,590.16/3,884.49 = 1,128.96/x
3. Step 3: Cross multiply
   2,590.16x = 3,884.49 × 1,128.96
4. Step 4: Simplify right side
   2,590.16x = 4,385,433.83
5. Step 5: Solve for x
   x = 4,385,433.83/2,590.16
6. Step 6: Final answer
   x = 1,693.12