Finding the Fourth Proportional to 2,665.34, 3,678.44 and 1,603.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.34 : 3,678.44 = 1,603.45 : x
2. Step 2: Convert to fraction form
   2,665.34/3,678.44 = 1,603.45/x
3. Step 3: Cross multiply
   2,665.34x = 3,678.44 × 1,603.45
4. Step 4: Simplify right side
   2,665.34x = 5,898,194.62
5. Step 5: Solve for x
   x = 5,898,194.62/2,665.34
6. Step 6: Final answer
   x = 2,212.92