Finding the Fourth Proportional to 1,638, 2,441.34 and 1,545.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638 : 2,441.34 = 1,545.72 : x
2. Step 2: Convert to fraction form
   1,638/2,441.34 = 1,545.72/x
3. Step 3: Cross multiply
   1,638x = 2,441.34 × 1,545.72
4. Step 4: Simplify right side
   1,638x = 3,773,628.06
5. Step 5: Solve for x
   x = 3,773,628.06/1,638
6. Step 6: Final answer
   x = 2,303.80