Finding the Fourth Proportional to 1,638.24, 2,445.48 and 1,516.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638.24 : 2,445.48 = 1,516.29 : x
2. Step 2: Convert to fraction form
   1,638.24/2,445.48 = 1,516.29/x
3. Step 3: Cross multiply
   1,638.24x = 2,445.48 × 1,516.29
4. Step 4: Simplify right side
   1,638.24x = 3,708,061.61
5. Step 5: Solve for x
   x = 3,708,061.61/1,638.24
6. Step 6: Final answer
   x = 2,263.44