Finding the Fourth Proportional to 2,764.86, 3,815.60 and 1,505.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.86 : 3,815.60 = 1,505.99 : x
2. Step 2: Convert to fraction form
   2,764.86/3,815.60 = 1,505.99/x
3. Step 3: Cross multiply
   2,764.86x = 3,815.60 × 1,505.99
4. Step 4: Simplify right side
   2,764.86x = 5,746,228.84
5. Step 5: Solve for x
   x = 5,746,228.84/2,764.86
6. Step 6: Final answer
   x = 2,078.31