Finding the Fourth Proportional to 2,056.20, 2,837.61 and 1,259.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.20 : 2,837.61 = 1,259.43 : x
2. Step 2: Convert to fraction form
   2,056.20/2,837.61 = 1,259.43/x
3. Step 3: Cross multiply
   2,056.20x = 2,837.61 × 1,259.43
4. Step 4: Simplify right side
   2,056.20x = 3,573,771.16
5. Step 5: Solve for x
   x = 3,573,771.16/2,056.20
6. Step 6: Final answer
   x = 1,738.05