Finding the Fourth Proportional to 2,321.53, 3,202.74 and 1,574.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.53 : 3,202.74 = 1,574.30 : x
2. Step 2: Convert to fraction form
   2,321.53/3,202.74 = 1,574.30/x
3. Step 3: Cross multiply
   2,321.53x = 3,202.74 × 1,574.30
4. Step 4: Simplify right side
   2,321.53x = 5,042,081.59
5. Step 5: Solve for x
   x = 5,042,081.59/2,321.53
6. Step 6: Final answer
   x = 2,171.88