Finding the Fourth Proportional to 2,505.56, 3,758.47 and 656.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.56 : 3,758.47 = 656.69 : x
2. Step 2: Convert to fraction form
   2,505.56/3,758.47 = 656.69/x
3. Step 3: Cross multiply
   2,505.56x = 3,758.47 × 656.69
4. Step 4: Simplify right side
   2,505.56x = 2,468,129.23
5. Step 5: Solve for x
   x = 2,468,129.23/2,505.56
6. Step 6: Final answer
   x = 985.06