Finding the Fourth Proportional to 2,123.46, 3,172.13 and 1,533.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.46 : 3,172.13 = 1,533.42 : x
2. Step 2: Convert to fraction form
   2,123.46/3,172.13 = 1,533.42/x
3. Step 3: Cross multiply
   2,123.46x = 3,172.13 × 1,533.42
4. Step 4: Simplify right side
   2,123.46x = 4,864,207.58
5. Step 5: Solve for x
   x = 4,864,207.58/2,123.46
6. Step 6: Final answer
   x = 2,290.70