Finding the Fourth Proportional to 1,053.25, 1,456.10 and 790.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.25 : 1,456.10 = 790.81 : x
2. Step 2: Convert to fraction form
   1,053.25/1,456.10 = 790.81/x
3. Step 3: Cross multiply
   1,053.25x = 1,456.10 × 790.81
4. Step 4: Simplify right side
   1,053.25x = 1,151,498.44
5. Step 5: Solve for x
   x = 1,151,498.44/1,053.25
6. Step 6: Final answer
   x = 1,093.28