Finding the Fourth Proportional to 1,085.31, 1,632.58 and 983.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.31 : 1,632.58 = 983.82 : x
2. Step 2: Convert to fraction form
   1,085.31/1,632.58 = 983.82/x
3. Step 3: Cross multiply
   1,085.31x = 1,632.58 × 983.82
4. Step 4: Simplify right side
   1,085.31x = 1,606,156.69
5. Step 5: Solve for x
   x = 1,606,156.69/1,085.31
6. Step 6: Final answer
   x = 1,479.91