Finding the Fourth Proportional to 2,321.30, 3,203.87 and 1,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.30 : 3,203.87 = 1,575.50 : x
2. Step 2: Convert to fraction form
   2,321.30/3,203.87 = 1,575.50/x
3. Step 3: Cross multiply
   2,321.30x = 3,203.87 × 1,575.50
4. Step 4: Simplify right side
   2,321.30x = 5,047,706.18
5. Step 5: Solve for x
   x = 5,047,706.18/2,321.30
6. Step 6: Final answer
   x = 2,174.51