Finding the Fourth Proportional to 1,045.83, 1,442.94 and 620.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.83 : 1,442.94 = 620.37 : x
2. Step 2: Convert to fraction form
   1,045.83/1,442.94 = 620.37/x
3. Step 3: Cross multiply
   1,045.83x = 1,442.94 × 620.37
4. Step 4: Simplify right side
   1,045.83x = 895,156.69
5. Step 5: Solve for x
   x = 895,156.69/1,045.83
6. Step 6: Final answer
   x = 855.93