Finding the Fourth Proportional to 2,669.78, 3,684.42 and 1,490.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.78 : 3,684.42 = 1,490.86 : x
2. Step 2: Convert to fraction form
   2,669.78/3,684.42 = 1,490.86/x
3. Step 3: Cross multiply
   2,669.78x = 3,684.42 × 1,490.86
4. Step 4: Simplify right side
   2,669.78x = 5,492,954.40
5. Step 5: Solve for x
   x = 5,492,954.40/2,669.78
6. Step 6: Final answer
   x = 2,057.46