Finding the Fourth Proportional to 1,123.01, 1,549.71 and 625.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.01 : 1,549.71 = 625.64 : x
2. Step 2: Convert to fraction form
   1,123.01/1,549.71 = 625.64/x
3. Step 3: Cross multiply
   1,123.01x = 1,549.71 × 625.64
4. Step 4: Simplify right side
   1,123.01x = 969,560.56
5. Step 5: Solve for x
   x = 969,560.56/1,123.01
6. Step 6: Final answer
   x = 863.36