Finding the Fourth Proportional to 1,488.26, 2,053.78 and 816.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.26 : 2,053.78 = 816.08 : x
2. Step 2: Convert to fraction form
   1,488.26/2,053.78 = 816.08/x
3. Step 3: Cross multiply
   1,488.26x = 2,053.78 × 816.08
4. Step 4: Simplify right side
   1,488.26x = 1,676,048.78
5. Step 5: Solve for x
   x = 1,676,048.78/1,488.26
6. Step 6: Final answer
   x = 1,126.18