Finding the Fourth Proportional to 2,575.83, 3,861.77 and 1,276.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.83 : 3,861.77 = 1,276.29 : x
2. Step 2: Convert to fraction form
   2,575.83/3,861.77 = 1,276.29/x
3. Step 3: Cross multiply
   2,575.83x = 3,861.77 × 1,276.29
4. Step 4: Simplify right side
   2,575.83x = 4,928,732.05
5. Step 5: Solve for x
   x = 4,928,732.05/2,575.83
6. Step 6: Final answer
   x = 1,913.45