Finding the Fourth Proportional to 2,475.89, 3,417.21 and 1,636.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.89 : 3,417.21 = 1,636.64 : x
2. Step 2: Convert to fraction form
   2,475.89/3,417.21 = 1,636.64/x
3. Step 3: Cross multiply
   2,475.89x = 3,417.21 × 1,636.64
4. Step 4: Simplify right side
   2,475.89x = 5,592,742.57
5. Step 5: Solve for x
   x = 5,592,742.57/2,475.89
6. Step 6: Final answer
   x = 2,258.88