Finding the Fourth Proportional to 1,797.69, 2,480.52 and 1,011.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,797.69 : 2,480.52 = 1,011.57 : x
2. Step 2: Convert to fraction form
   1,797.69/2,480.52 = 1,011.57/x
3. Step 3: Cross multiply
   1,797.69x = 2,480.52 × 1,011.57
4. Step 4: Simplify right side
   1,797.69x = 2,509,219.62
5. Step 5: Solve for x
   x = 2,509,219.62/1,797.69
6. Step 6: Final answer
   x = 1,395.80