Finding the Fourth Proportional to 1,803.34, 2,488.55 and 1,006.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.34 : 2,488.55 = 1,006.69 : x
2. Step 2: Convert to fraction form
   1,803.34/2,488.55 = 1,006.69/x
3. Step 3: Cross multiply
   1,803.34x = 2,488.55 × 1,006.69
4. Step 4: Simplify right side
   1,803.34x = 2,505,198.40
5. Step 5: Solve for x
   x = 2,505,198.40/1,803.34
6. Step 6: Final answer
   x = 1,389.20