Finding the Fourth Proportional to 1,045.57, 1,442.46 and 625.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.57 : 1,442.46 = 625.82 : x
2. Step 2: Convert to fraction form
   1,045.57/1,442.46 = 625.82/x
3. Step 3: Cross multiply
   1,045.57x = 1,442.46 × 625.82
4. Step 4: Simplify right side
   1,045.57x = 902,720.32
5. Step 5: Solve for x
   x = 902,720.32/1,045.57
6. Step 6: Final answer
   x = 863.38