Finding the Fourth Proportional to 2,665.85, 3,678.89 and 1,547.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.85 : 3,678.89 = 1,547.45 : x
2. Step 2: Convert to fraction form
   2,665.85/3,678.89 = 1,547.45/x
3. Step 3: Cross multiply
   2,665.85x = 3,678.89 × 1,547.45
4. Step 4: Simplify right side
   2,665.85x = 5,692,898.33
5. Step 5: Solve for x
   x = 5,692,898.33/2,665.85
6. Step 6: Final answer
   x = 2,135.49