Finding the Fourth Proportional to 1,609.16, 2,415.29 and 1,061.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.16 : 2,415.29 = 1,061.72 : x
2. Step 2: Convert to fraction form
   1,609.16/2,415.29 = 1,061.72/x
3. Step 3: Cross multiply
   1,609.16x = 2,415.29 × 1,061.72
4. Step 4: Simplify right side
   1,609.16x = 2,564,361.70
5. Step 5: Solve for x
   x = 2,564,361.70/1,609.16
6. Step 6: Final answer
   x = 1,593.60