Finding the Fourth Proportional to 1,123.07, 1,549.82 and 625.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.07 : 1,549.82 = 625.76 : x
2. Step 2: Convert to fraction form
   1,123.07/1,549.82 = 625.76/x
3. Step 3: Cross multiply
   1,123.07x = 1,549.82 × 625.76
4. Step 4: Simplify right side
   1,123.07x = 969,809.18
5. Step 5: Solve for x
   x = 969,809.18/1,123.07
6. Step 6: Final answer
   x = 863.53