Finding the Fourth Proportional to 2,559.31, 3,835.86 and 1,170.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.31 : 3,835.86 = 1,170.70 : x
2. Step 2: Convert to fraction form
   2,559.31/3,835.86 = 1,170.70/x
3. Step 3: Cross multiply
   2,559.31x = 3,835.86 × 1,170.70
4. Step 4: Simplify right side
   2,559.31x = 4,490,641.30
5. Step 5: Solve for x
   x = 4,490,641.30/2,559.31
6. Step 6: Final answer
   x = 1,754.63