Finding the Fourth Proportional to 2,056.59, 2,839.32 and 1,271.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.59 : 2,839.32 = 1,271.70 : x
2. Step 2: Convert to fraction form
   2,056.59/2,839.32 = 1,271.70/x
3. Step 3: Cross multiply
   2,056.59x = 2,839.32 × 1,271.70
4. Step 4: Simplify right side
   2,056.59x = 3,610,763.24
5. Step 5: Solve for x
   x = 3,610,763.24/2,056.59
6. Step 6: Final answer
   x = 1,755.70