Finding the Fourth Proportional to 5,123.46, 7,684.40 and 1,425.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.46 : 7,684.40 = 1,425.30 : x
2. Step 2: Convert to fraction form
   5,123.46/7,684.40 = 1,425.30/x
3. Step 3: Cross multiply
   5,123.46x = 7,684.40 × 1,425.30
4. Step 4: Simplify right side
   5,123.46x = 10,952,575.32
5. Step 5: Solve for x
   x = 10,952,575.32/5,123.46
6. Step 6: Final answer
   x = 2,137.73