Finding the Fourth Proportional to 1,646.74, 2,272.89 and 983.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.74 : 2,272.89 = 983.89 : x
2. Step 2: Convert to fraction form
   1,646.74/2,272.89 = 983.89/x
3. Step 3: Cross multiply
   1,646.74x = 2,272.89 × 983.89
4. Step 4: Simplify right side
   1,646.74x = 2,236,273.74
5. Step 5: Solve for x
   x = 2,236,273.74/1,646.74
6. Step 6: Final answer
   x = 1,358.00