Finding the Fourth Proportional to 1,123.22, 1,550.04 and 625.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.22 : 1,550.04 = 625.87 : x
2. Step 2: Convert to fraction form
   1,123.22/1,550.04 = 625.87/x
3. Step 3: Cross multiply
   1,123.22x = 1,550.04 × 625.87
4. Step 4: Simplify right side
   1,123.22x = 970,131.01
5. Step 5: Solve for x
   x = 970,131.01/1,123.22
6. Step 6: Final answer
   x = 863.71