Finding the Fourth Proportional to 2,103.09, 3,152.21 and 1,225.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.09 : 3,152.21 = 1,225.89 : x
2. Step 2: Convert to fraction form
   2,103.09/3,152.21 = 1,225.89/x
3. Step 3: Cross multiply
   2,103.09x = 3,152.21 × 1,225.89
4. Step 4: Simplify right side
   2,103.09x = 3,864,256.59
5. Step 5: Solve for x
   x = 3,864,256.59/2,103.09
6. Step 6: Final answer
   x = 1,837.42