Finding the Fourth Proportional to 1,123.12, 1,685.24 and 629.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.12 : 1,685.24 = 629.22 : x
2. Step 2: Convert to fraction form
   1,123.12/1,685.24 = 629.22/x
3. Step 3: Cross multiply
   1,123.12x = 1,685.24 × 629.22
4. Step 4: Simplify right side
   1,123.12x = 1,060,386.71
5. Step 5: Solve for x
   x = 1,060,386.71/1,123.12
6. Step 6: Final answer
   x = 944.14