Finding the Fourth Proportional to 1,611.72, 2,404.80 and 1,448.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.72 : 2,404.80 = 1,448.64 : x
2. Step 2: Convert to fraction form
   1,611.72/2,404.80 = 1,448.64/x
3. Step 3: Cross multiply
   1,611.72x = 2,404.80 × 1,448.64
4. Step 4: Simplify right side
   1,611.72x = 3,483,689.47
5. Step 5: Solve for x
   x = 3,483,689.47/1,611.72
6. Step 6: Final answer
   x = 2,161.47