Finding the Fourth Proportional to 1,339.74, 1,841.10 and 1,103.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.74 : 1,841.10 = 1,103.25 : x
2. Step 2: Convert to fraction form
   1,339.74/1,841.10 = 1,103.25/x
3. Step 3: Cross multiply
   1,339.74x = 1,841.10 × 1,103.25
4. Step 4: Simplify right side
   1,339.74x = 2,031,196.34
5. Step 5: Solve for x
   x = 2,031,196.34/1,339.74
6. Step 6: Final answer
   x = 1,516.11