Finding the Fourth Proportional to 2,548.91, 3,516.01 and 1,603.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.91 : 3,516.01 = 1,603.21 : x
2. Step 2: Convert to fraction form
   2,548.91/3,516.01 = 1,603.21/x
3. Step 3: Cross multiply
   2,548.91x = 3,516.01 × 1,603.21
4. Step 4: Simplify right side
   2,548.91x = 5,636,902.39
5. Step 5: Solve for x
   x = 5,636,902.39/2,548.91
6. Step 6: Final answer
   x = 2,211.50