Finding the Fourth Proportional to 2,669.47, 3,684.21 and 1,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.47 : 3,684.21 = 1,490.78 : x
2. Step 2: Convert to fraction form
   2,669.47/3,684.21 = 1,490.78/x
3. Step 3: Cross multiply
   2,669.47x = 3,684.21 × 1,490.78
4. Step 4: Simplify right side
   2,669.47x = 5,492,346.58
5. Step 5: Solve for x
   x = 5,492,346.58/2,669.47
6. Step 6: Final answer
   x = 2,057.47