Finding the Fourth Proportional to 2,576.56, 3,865.25 and 933.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.56 : 3,865.25 = 933.21 : x
2. Step 2: Convert to fraction form
   2,576.56/3,865.25 = 933.21/x
3. Step 3: Cross multiply
   2,576.56x = 3,865.25 × 933.21
4. Step 4: Simplify right side
   2,576.56x = 3,607,089.95
5. Step 5: Solve for x
   x = 3,607,089.95/2,576.56
6. Step 6: Final answer
   x = 1,399.96