Finding the Fourth Proportional to 1,123.37, 1,680.55 and 970.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.37 : 1,680.55 = 970.94 : x
2. Step 2: Convert to fraction form
   1,123.37/1,680.55 = 970.94/x
3. Step 3: Cross multiply
   1,123.37x = 1,680.55 × 970.94
4. Step 4: Simplify right side
   1,123.37x = 1,631,705.54
5. Step 5: Solve for x
   x = 1,631,705.54/1,123.37
6. Step 6: Final answer
   x = 1,452.51