Finding the Fourth Proportional to 3,749.78, 5,626.29 and 2,103.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,749.78 : 5,626.29 = 2,103.86 : x
2. Step 2: Convert to fraction form
   3,749.78/5,626.29 = 2,103.86/x
3. Step 3: Cross multiply
   3,749.78x = 5,626.29 × 2,103.86
4. Step 4: Simplify right side
   3,749.78x = 11,836,948.43
5. Step 5: Solve for x
   x = 11,836,948.43/3,749.78
6. Step 6: Final answer
   x = 3,156.70