Finding the Fourth Proportional to 1,489.55, 2,053.89 and 1,017.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.55 : 2,053.89 = 1,017.72 : x
2. Step 2: Convert to fraction form
   1,489.55/2,053.89 = 1,017.72/x
3. Step 3: Cross multiply
   1,489.55x = 2,053.89 × 1,017.72
4. Step 4: Simplify right side
   1,489.55x = 2,090,284.93
5. Step 5: Solve for x
   x = 2,090,284.93/1,489.55
6. Step 6: Final answer
   x = 1,403.30