Finding the Fourth Proportional to 1,265.94, 1,900.53 and 1,074.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.94 : 1,900.53 = 1,074.78 : x
2. Step 2: Convert to fraction form
   1,265.94/1,900.53 = 1,074.78/x
3. Step 3: Cross multiply
   1,265.94x = 1,900.53 × 1,074.78
4. Step 4: Simplify right side
   1,265.94x = 2,042,651.63
5. Step 5: Solve for x
   x = 2,042,651.63/1,265.94
6. Step 6: Final answer
   x = 1,613.55