Finding the Fourth Proportional to 2,517.90, 3,778.32 and 1,056.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.90 : 3,778.32 = 1,056.94 : x
2. Step 2: Convert to fraction form
   2,517.90/3,778.32 = 1,056.94/x
3. Step 3: Cross multiply
   2,517.90x = 3,778.32 × 1,056.94
4. Step 4: Simplify right side
   2,517.90x = 3,993,457.54
5. Step 5: Solve for x
   x = 3,993,457.54/2,517.90
6. Step 6: Final answer
   x = 1,586.03