Finding the Fourth Proportional to 1,123.10, 1,682.60 and 959.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.10 : 1,682.60 = 959.08 : x
2. Step 2: Convert to fraction form
   1,123.10/1,682.60 = 959.08/x
3. Step 3: Cross multiply
   1,123.10x = 1,682.60 × 959.08
4. Step 4: Simplify right side
   1,123.10x = 1,613,748.01
5. Step 5: Solve for x
   x = 1,613,748.01/1,123.10
6. Step 6: Final answer
   x = 1,436.87