Finding the Fourth Proportional to 2,665.18, 3,677.88 and 1,545.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.18 : 3,677.88 = 1,545.40 : x
2. Step 2: Convert to fraction form
   2,665.18/3,677.88 = 1,545.40/x
3. Step 3: Cross multiply
   2,665.18x = 3,677.88 × 1,545.40
4. Step 4: Simplify right side
   2,665.18x = 5,683,795.75
5. Step 5: Solve for x
   x = 5,683,795.75/2,665.18
6. Step 6: Final answer
   x = 2,132.61