Finding the Fourth Proportional to 2,160.16, 2,979.18 and 1,740.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.16 : 2,979.18 = 1,740.38 : x
2. Step 2: Convert to fraction form
   2,160.16/2,979.18 = 1,740.38/x
3. Step 3: Cross multiply
   2,160.16x = 2,979.18 × 1,740.38
4. Step 4: Simplify right side
   2,160.16x = 5,184,890.39
5. Step 5: Solve for x
   x = 5,184,890.39/2,160.16
6. Step 6: Final answer
   x = 2,400.24