Finding the Fourth Proportional to 2,685.15, 3,705.56 and 1,490.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.15 : 3,705.56 = 1,490.15 : x
2. Step 2: Convert to fraction form
   2,685.15/3,705.56 = 1,490.15/x
3. Step 3: Cross multiply
   2,685.15x = 3,705.56 × 1,490.15
4. Step 4: Simplify right side
   2,685.15x = 5,521,835.17
5. Step 5: Solve for x
   x = 5,521,835.17/2,685.15
6. Step 6: Final answer
   x = 2,056.43