Finding the Fourth Proportional to 2,068.63, 3,103.40 and 1,145.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.63 : 3,103.40 = 1,145.53 : x
2. Step 2: Convert to fraction form
   2,068.63/3,103.40 = 1,145.53/x
3. Step 3: Cross multiply
   2,068.63x = 3,103.40 × 1,145.53
4. Step 4: Simplify right side
   2,068.63x = 3,555,037.80
5. Step 5: Solve for x
   x = 3,555,037.80/2,068.63
6. Step 6: Final answer
   x = 1,718.55