Finding the Fourth Proportional to 2,103.50, 3,155.29 and 543.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.50 : 3,155.29 = 543.52 : x
2. Step 2: Convert to fraction form
   2,103.50/3,155.29 = 543.52/x
3. Step 3: Cross multiply
   2,103.50x = 3,155.29 × 543.52
4. Step 4: Simplify right side
   2,103.50x = 1,714,948.06
5. Step 5: Solve for x
   x = 1,714,948.06/2,103.50
6. Step 6: Final answer
   x = 815.28