Finding the Fourth Proportional to 1,661.10, 2,490.57 and 1,529.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.10 : 2,490.57 = 1,529.34 : x
2. Step 2: Convert to fraction form
   1,661.10/2,490.57 = 1,529.34/x
3. Step 3: Cross multiply
   1,661.10x = 2,490.57 × 1,529.34
4. Step 4: Simplify right side
   1,661.10x = 3,808,928.32
5. Step 5: Solve for x
   x = 3,808,928.32/1,661.10
6. Step 6: Final answer
   x = 2,293.02