Finding the Fourth Proportional to 2,152.67, 3,230.40 and 983.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.67 : 3,230.40 = 983.30 : x
2. Step 2: Convert to fraction form
   2,152.67/3,230.40 = 983.30/x
3. Step 3: Cross multiply
   2,152.67x = 3,230.40 × 983.30
4. Step 4: Simplify right side
   2,152.67x = 3,176,452.32
5. Step 5: Solve for x
   x = 3,176,452.32/2,152.67
6. Step 6: Final answer
   x = 1,475.59