Finding the Fourth Proportional to 1,803.69, 2,488.80 and 1,017.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.69 : 2,488.80 = 1,017.60 : x
2. Step 2: Convert to fraction form
   1,803.69/2,488.80 = 1,017.60/x
3. Step 3: Cross multiply
   1,803.69x = 2,488.80 × 1,017.60
4. Step 4: Simplify right side
   1,803.69x = 2,532,602.88
5. Step 5: Solve for x
   x = 2,532,602.88/1,803.69
6. Step 6: Final answer
   x = 1,404.12