Finding the Fourth Proportional to 2,546.38, 3,515.72 and 1,590.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.38 : 3,515.72 = 1,590.74 : x
2. Step 2: Convert to fraction form
   2,546.38/3,515.72 = 1,590.74/x
3. Step 3: Cross multiply
   2,546.38x = 3,515.72 × 1,590.74
4. Step 4: Simplify right side
   2,546.38x = 5,592,603.86
5. Step 5: Solve for x
   x = 5,592,603.86/2,546.38
6. Step 6: Final answer
   x = 2,196.30