Finding the Fourth Proportional to 2,500.78, 3,452.55 and 1,715.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.78 : 3,452.55 = 1,715.98 : x
2. Step 2: Convert to fraction form
   2,500.78/3,452.55 = 1,715.98/x
3. Step 3: Cross multiply
   2,500.78x = 3,452.55 × 1,715.98
4. Step 4: Simplify right side
   2,500.78x = 5,924,506.75
5. Step 5: Solve for x
   x = 5,924,506.75/2,500.78
6. Step 6: Final answer
   x = 2,369.06