Finding the Fourth Proportional to 2,605.57, 3,888.34 and 2,328.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.57 : 3,888.34 = 2,328.76 : x
2. Step 2: Convert to fraction form
   2,605.57/3,888.34 = 2,328.76/x
3. Step 3: Cross multiply
   2,605.57x = 3,888.34 × 2,328.76
4. Step 4: Simplify right side
   2,605.57x = 9,055,010.66
5. Step 5: Solve for x
   x = 9,055,010.66/2,605.57
6. Step 6: Final answer
   x = 3,475.25