Finding the Fourth Proportional to 2,285.74, 3,155.79 and 1,867.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.74 : 3,155.79 = 1,867.10 : x
2. Step 2: Convert to fraction form
   2,285.74/3,155.79 = 1,867.10/x
3. Step 3: Cross multiply
   2,285.74x = 3,155.79 × 1,867.10
4. Step 4: Simplify right side
   2,285.74x = 5,892,166.17
5. Step 5: Solve for x
   x = 5,892,166.17/2,285.74
6. Step 6: Final answer
   x = 2,577.79