Finding the Fourth Proportional to 2,285.94, 3,428.82 and 1,590.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.94 : 3,428.82 = 1,590.56 : x
2. Step 2: Convert to fraction form
   2,285.94/3,428.82 = 1,590.56/x
3. Step 3: Cross multiply
   2,285.94x = 3,428.82 × 1,590.56
4. Step 4: Simplify right side
   2,285.94x = 5,453,743.94
5. Step 5: Solve for x
   x = 5,453,743.94/2,285.94
6. Step 6: Final answer
   x = 2,385.78