Finding the Fourth Proportional to 2,590.56, 3,887.46 and 1,615.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.56 : 3,887.46 = 1,615.32 : x
2. Step 2: Convert to fraction form
   2,590.56/3,887.46 = 1,615.32/x
3. Step 3: Cross multiply
   2,590.56x = 3,887.46 × 1,615.32
4. Step 4: Simplify right side
   2,590.56x = 6,279,491.89
5. Step 5: Solve for x
   x = 6,279,491.89/2,590.56
6. Step 6: Final answer
   x = 2,423.99