Finding the Fourth Proportional to 1,489.73, 2,055.72 and 826.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.73 : 2,055.72 = 826.53 : x
2. Step 2: Convert to fraction form
   1,489.73/2,055.72 = 826.53/x
3. Step 3: Cross multiply
   1,489.73x = 2,055.72 × 826.53
4. Step 4: Simplify right side
   1,489.73x = 1,699,109.64
5. Step 5: Solve for x
   x = 1,699,109.64/1,489.73
6. Step 6: Final answer
   x = 1,140.55