Finding the Fourth Proportional to 1,205.55, 1,662.93 and 983.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205.55 : 1,662.93 = 983.34 : x
2. Step 2: Convert to fraction form
   1,205.55/1,662.93 = 983.34/x
3. Step 3: Cross multiply
   1,205.55x = 1,662.93 × 983.34
4. Step 4: Simplify right side
   1,205.55x = 1,635,225.59
5. Step 5: Solve for x
   x = 1,635,225.59/1,205.55
6. Step 6: Final answer
   x = 1,356.41