Finding the Fourth Proportional to 2,574.59, 3,861.73 and 1,257.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.59 : 3,861.73 = 1,257.83 : x
2. Step 2: Convert to fraction form
   2,574.59/3,861.73 = 1,257.83/x
3. Step 3: Cross multiply
   2,574.59x = 3,861.73 × 1,257.83
4. Step 4: Simplify right side
   2,574.59x = 4,857,393.56
5. Step 5: Solve for x
   x = 4,857,393.56/2,574.59
6. Step 6: Final answer
   x = 1,886.67