Finding the Fourth Proportional to 2,065.60, 2,850.52 and 1,121.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.60 : 2,850.52 = 1,121.39 : x
2. Step 2: Convert to fraction form
   2,065.60/2,850.52 = 1,121.39/x
3. Step 3: Cross multiply
   2,065.60x = 2,850.52 × 1,121.39
4. Step 4: Simplify right side
   2,065.60x = 3,196,542.30
5. Step 5: Solve for x
   x = 3,196,542.30/2,065.60
6. Step 6: Final answer
   x = 1,547.51