Finding the Fourth Proportional to 2,404.90, 3,600.15 and 2,145.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,404.90 : 3,600.15 = 2,145.70 : x
2. Step 2: Convert to fraction form
   2,404.90/3,600.15 = 2,145.70/x
3. Step 3: Cross multiply
   2,404.90x = 3,600.15 × 2,145.70
4. Step 4: Simplify right side
   2,404.90x = 7,724,841.86
5. Step 5: Solve for x
   x = 7,724,841.86/2,404.90
6. Step 6: Final answer
   x = 3,212.13