Finding the Fourth Proportional to 2,300.31, 3,171.51 and 1,553.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.31 : 3,171.51 = 1,553.76 : x
2. Step 2: Convert to fraction form
   2,300.31/3,171.51 = 1,553.76/x
3. Step 3: Cross multiply
   2,300.31x = 3,171.51 × 1,553.76
4. Step 4: Simplify right side
   2,300.31x = 4,927,765.38
5. Step 5: Solve for x
   x = 4,927,765.38/2,300.31
6. Step 6: Final answer
   x = 2,142.22