Finding the Fourth Proportional to 2,705.88, 4,056.38 and 1,403.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,705.88 : 4,056.38 = 1,403.40 : x
2. Step 2: Convert to fraction form
   2,705.88/4,056.38 = 1,403.40/x
3. Step 3: Cross multiply
   2,705.88x = 4,056.38 × 1,403.40
4. Step 4: Simplify right side
   2,705.88x = 5,692,723.69
5. Step 5: Solve for x
   x = 5,692,723.69/2,705.88
6. Step 6: Final answer
   x = 2,103.83