Finding the Fourth Proportional to 1,646.32, 2,271.90 and 983.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.32 : 2,271.90 = 983.05 : x
2. Step 2: Convert to fraction form
   1,646.32/2,271.90 = 983.05/x
3. Step 3: Cross multiply
   1,646.32x = 2,271.90 × 983.05
4. Step 4: Simplify right side
   1,646.32x = 2,233,375.02
5. Step 5: Solve for x
   x = 2,233,375.02/1,646.32
6. Step 6: Final answer
   x = 1,356.59