Finding the Fourth Proportional to 2,559.34, 3,835.96 and 1,171.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.34 : 3,835.96 = 1,171.40 : x
2. Step 2: Convert to fraction form
   2,559.34/3,835.96 = 1,171.40/x
3. Step 3: Cross multiply
   2,559.34x = 3,835.96 × 1,171.40
4. Step 4: Simplify right side
   2,559.34x = 4,493,443.54
5. Step 5: Solve for x
   x = 4,493,443.54/2,559.34
6. Step 6: Final answer
   x = 1,755.70