Finding the Fourth Proportional to 2,672.34, 3,688.64 and 1,553.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.34 : 3,688.64 = 1,553.46 : x
2. Step 2: Convert to fraction form
   2,672.34/3,688.64 = 1,553.46/x
3. Step 3: Cross multiply
   2,672.34x = 3,688.64 × 1,553.46
4. Step 4: Simplify right side
   2,672.34x = 5,730,154.69
5. Step 5: Solve for x
   x = 5,730,154.69/2,672.34
6. Step 6: Final answer
   x = 2,144.25