Finding the Fourth Proportional to 2,354.72, 3,545.72 and 2,069.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,354.72 : 3,545.72 = 2,069.60 : x
2. Step 2: Convert to fraction form
   2,354.72/3,545.72 = 2,069.60/x
3. Step 3: Cross multiply
   2,354.72x = 3,545.72 × 2,069.60
4. Step 4: Simplify right side
   2,354.72x = 7,338,222.11
5. Step 5: Solve for x
   x = 7,338,222.11/2,354.72
6. Step 6: Final answer
   x = 3,116.39