Finding the Fourth Proportional to 1,612.82, 2,225.24 and 983.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.82 : 2,225.24 = 983.38 : x
2. Step 2: Convert to fraction form
   1,612.82/2,225.24 = 983.38/x
3. Step 3: Cross multiply
   1,612.82x = 2,225.24 × 983.38
4. Step 4: Simplify right side
   1,612.82x = 2,188,256.51
5. Step 5: Solve for x
   x = 2,188,256.51/1,612.82
6. Step 6: Final answer
   x = 1,356.79