Finding the Fourth Proportional to 1,051.73, 1,449.89 and 771.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.73 : 1,449.89 = 771.47 : x
2. Step 2: Convert to fraction form
   1,051.73/1,449.89 = 771.47/x
3. Step 3: Cross multiply
   1,051.73x = 1,449.89 × 771.47
4. Step 4: Simplify right side
   1,051.73x = 1,118,542.78
5. Step 5: Solve for x
   x = 1,118,542.78/1,051.73
6. Step 6: Final answer
   x = 1,063.53