Finding the Fourth Proportional to 3,114.86, 4,298.15 and 1,855.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,114.86 : 4,298.15 = 1,855.74 : x
2. Step 2: Convert to fraction form
   3,114.86/4,298.15 = 1,855.74/x
3. Step 3: Cross multiply
   3,114.86x = 4,298.15 × 1,855.74
4. Step 4: Simplify right side
   3,114.86x = 7,976,253.52
5. Step 5: Solve for x
   x = 7,976,253.52/3,114.86
6. Step 6: Final answer
   x = 2,560.71