Finding the Fourth Proportional to 1,123.02, 1,549.26 and 680.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.02 : 1,549.26 = 680.58 : x
2. Step 2: Convert to fraction form
   1,123.02/1,549.26 = 680.58/x
3. Step 3: Cross multiply
   1,123.02x = 1,549.26 × 680.58
4. Step 4: Simplify right side
   1,123.02x = 1,054,395.37
5. Step 5: Solve for x
   x = 1,054,395.37/1,123.02
6. Step 6: Final answer
   x = 938.89