Finding the Fourth Proportional to 1,573.20, 2,168.82 and 983.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.20 : 2,168.82 = 983.34 : x
2. Step 2: Convert to fraction form
   1,573.20/2,168.82 = 983.34/x
3. Step 3: Cross multiply
   1,573.20x = 2,168.82 × 983.34
4. Step 4: Simplify right side
   1,573.20x = 2,132,687.46
5. Step 5: Solve for x
   x = 2,132,687.46/1,573.20
6. Step 6: Final answer
   x = 1,355.64