Finding the Fourth Proportional to 1,123.37, 1,685.88 and 637.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.37 : 1,685.88 = 637.37 : x
2. Step 2: Convert to fraction form
   1,123.37/1,685.88 = 637.37/x
3. Step 3: Cross multiply
   1,123.37x = 1,685.88 × 637.37
4. Step 4: Simplify right side
   1,123.37x = 1,074,529.34
5. Step 5: Solve for x
   x = 1,074,529.34/1,123.37
6. Step 6: Final answer
   x = 956.52