Finding the Fourth Proportional to 1,124.42, 1,683.72 and 637.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.42 : 1,683.72 = 637.74 : x
2. Step 2: Convert to fraction form
   1,124.42/1,683.72 = 637.74/x
3. Step 3: Cross multiply
   1,124.42x = 1,683.72 × 637.74
4. Step 4: Simplify right side
   1,124.42x = 1,073,775.59
5. Step 5: Solve for x
   x = 1,073,775.59/1,124.42
6. Step 6: Final answer
   x = 954.96