Finding the Fourth Proportional to 2,638.64, 3,633.36 and 2,503.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.64 : 3,633.36 = 2,503.10 : x
2. Step 2: Convert to fraction form
   2,638.64/3,633.36 = 2,503.10/x
3. Step 3: Cross multiply
   2,638.64x = 3,633.36 × 2,503.10
4. Step 4: Simplify right side
   2,638.64x = 9,094,663.11
5. Step 5: Solve for x
   x = 9,094,663.11/2,638.64
6. Step 6: Final answer
   x = 3,446.72