Finding the Fourth Proportional to 2,560.53, 3,836.72 and 1,863.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.53 : 3,836.72 = 1,863.99 : x
2. Step 2: Convert to fraction form
   2,560.53/3,836.72 = 1,863.99/x
3. Step 3: Cross multiply
   2,560.53x = 3,836.72 × 1,863.99
4. Step 4: Simplify right side
   2,560.53x = 7,151,607.71
5. Step 5: Solve for x
   x = 7,151,607.71/2,560.53
6. Step 6: Final answer
   x = 2,793.02