Finding the Fourth Proportional to 2,605.20, 3,908.52 and 1,507.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.20 : 3,908.52 = 1,507.56 : x
2. Step 2: Convert to fraction form
   2,605.20/3,908.52 = 1,507.56/x
3. Step 3: Cross multiply
   2,605.20x = 3,908.52 × 1,507.56
4. Step 4: Simplify right side
   2,605.20x = 5,892,328.41
5. Step 5: Solve for x
   x = 5,892,328.41/2,605.20
6. Step 6: Final answer
   x = 2,261.76