Finding the Fourth Proportional to 1,093.33, 1,508.71 and 621.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.33 : 1,508.71 = 621.23 : x
2. Step 2: Convert to fraction form
   1,093.33/1,508.71 = 621.23/x
3. Step 3: Cross multiply
   1,093.33x = 1,508.71 × 621.23
4. Step 4: Simplify right side
   1,093.33x = 937,255.91
5. Step 5: Solve for x
   x = 937,255.91/1,093.33
6. Step 6: Final answer
   x = 857.25