Finding the Fourth Proportional to 2,074.02, 3,107.79 and 1,665.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.02 : 3,107.79 = 1,665.78 : x
2. Step 2: Convert to fraction form
   2,074.02/3,107.79 = 1,665.78/x
3. Step 3: Cross multiply
   2,074.02x = 3,107.79 × 1,665.78
4. Step 4: Simplify right side
   2,074.02x = 5,176,894.43
5. Step 5: Solve for x
   x = 5,176,894.43/2,074.02
6. Step 6: Final answer
   x = 2,496.07