Finding the Fourth Proportional to 1,488.30, 2,053.83 and 816.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.30 : 2,053.83 = 816.10 : x
2. Step 2: Convert to fraction form
   1,488.30/2,053.83 = 816.10/x
3. Step 3: Cross multiply
   1,488.30x = 2,053.83 × 816.10
4. Step 4: Simplify right side
   1,488.30x = 1,676,130.66
5. Step 5: Solve for x
   x = 1,676,130.66/1,488.30
6. Step 6: Final answer
   x = 1,126.20