Finding the Fourth Proportional to 1,610.56, 2,401.72 and 1,521.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.56 : 2,401.72 = 1,521.64 : x
2. Step 2: Convert to fraction form
   1,610.56/2,401.72 = 1,521.64/x
3. Step 3: Cross multiply
   1,610.56x = 2,401.72 × 1,521.64
4. Step 4: Simplify right side
   1,610.56x = 3,654,553.22
5. Step 5: Solve for x
   x = 3,654,553.22/1,610.56
6. Step 6: Final answer
   x = 2,269.12