Finding the Fourth Proportional to 3,762.78, 5,644.89 and 1,913.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,762.78 : 5,644.89 = 1,913.10 : x
2. Step 2: Convert to fraction form
   3,762.78/5,644.89 = 1,913.10/x
3. Step 3: Cross multiply
   3,762.78x = 5,644.89 × 1,913.10
4. Step 4: Simplify right side
   3,762.78x = 10,799,239.06
5. Step 5: Solve for x
   x = 10,799,239.06/3,762.78
6. Step 6: Final answer
   x = 2,870.02